Had he expressed hatred or prejudice based on their religion, like the AC above did with Islam...
Fuck Christianity. The only thing it has going for it is that it's not quite as evil as Islam.
...that would be bigotry.
You know... picking A religion as being "more evil" based on current political situation, when every single flavor of Abrahamic religion has uncountable crimes to answer for, and those others aren't much different either.
Pointing out that all brands of Christianity are the same fairytale (only told a bit differently) is just telling the truth.
Just like pointing out that all religions are evil as they teach the people to build their view of reality based on a delusion - basically, inducing billions with cognitive dissonance bordering on insanity.
Meanwhile, staying politically correct and letting them carry on with their delusion without at least pointing out the most glaring flaws in it - that would be hypocrisy.
Also, infliction of harm through inaction.
Sadly, this is deeply insightful and correct. I do think it is possible to sort religions and sects out very roughly in order of the overt evilness of their scriptural precepts and functional memes, but it is much more difficult to project this evil onto individuals who nominally belong to such a sect. That is because we live in an age of heresy unheard of before, where everybody feels perfectly free to makes stuff up and alter the fundamental scriptural precepts and memes at will. Hence if you point out (correctly) that the position of most Southern Baptist churches is that homosexuality is a sin:
then of course somebody will turn around and point out an exception. And since we outlawed burning people, hanging people, torturing people, jailing people, silencing people, persecuting people, prosecuting people, and otherwise using force majeure and mortal sanction to enforce rules against choice, there have been plenty of exceptions, in fact being heretical is the post-Enlightenment post-Protestant normal, with an ever increasing divergence of belief. So although it is absolutely true that the official position of the Catholic church is one that opposes the use of birth control, in the US nearly all Catholics would be considered heretic by the non-heretical standards of Catholicism 400 years ago, and most sexually active Catholics use birth control. One can also compare Bellarmine's Letter to Galileo (which lays out its formal dogma concerning the ad literam interpretation of scripture and the horrific doors of heresy and contradiction that are opened by allowing it to be "interpreted" according to the discoveries of the science Galileo and others were in the process of inventing) to modern reality, and note that all of those predictions have, in fact, come to pass.
The point in the end is that none of this matters. One can take any of the scripture-based religions and note countless contradictions in their scriptures and that will not falsify them in the minds of individuals who nominally subscribe to it (but then lay on a small mountain of individual heresies according to their individual whim) because they will, as you note, willfully engage in a rich mixture of the practices associated with cognitive dissonance to avoid confronting the contradictions. Hermeneutics, exegesis, head in the sand syndrome, or simple denial, one cannot prove them wrong and hence they consider themselves "free" to continue to believe an absurd mythology (modified to suite their particular personality).
And this will still not make that mythology true! Or make it probably true, the only kind of truth a good Bayesian can acknowledge. Lack of evidence is not evidence of lack, perhaps, but it also damn well isn't evidence for, and the default state of belief, the null hypothesis, is disbelief in any given exotic proposition concerning the metaphysical nature of the real world. Any other system leads, as you note, to a kind of mass delusion, to the evil of willfully believing the untrue. How can one choose wisely, especially when confronted with ethical choices, on the basis of (probably) untrue beliefs with no objective support?
One of the many great lies concerning religion is that religion is harmless. Believing in things that aren't true causes countless life decisions to be made poorly at best. Even Buddhism suffers from this problem -- it is based on a model of serial reincarnation and some sort of automated cosmic justice engine that is all pure fantasy, without a shred of objective, double blind verifiable support (and with no POSSIBLE model for how the cosmic/karmic justice engine might actually work, or how any possible part of our "identity" might be preserved at the information theoretic level to bounce around from physical matrix to physical matrix). One of the consequences of this false idea is that Buddhism considers it a virtue for lay people to support the "clergy", people who have given up participating in ordinary life in favor of meditating and seeking enlightenment. In principle if you help somebody become enlightened in this life, you will have a better chance of enlightenment yourself in the next one.
Notice how even this very simple, seemingly harmless assumption leads to great evil. If, in fact, we have exactly one lifetime in which to attain "enlightenment" ourselves, working hard and giving our money to a slothful drone so that they can be enlightened in our place makes zero sense, it is in fact precisely the sort of abuse Buddha railed against in the prevalent Hindu priesthood, that routinely extorted a living from the peasantry. That doesn't make the other precepts of Buddhism (which are practical and empirical) wrong, it just means that there should never be a separate "lay" community and "monk" community with the former supporting the latter in any way. Quakers got this one right, where of course they get OTHER things wrong.
A rational being separates rational ethics from myth-based morality, and does not base entire systems of asserted "right action" on unverifiable post-mortem hypotheses born of some mix of imagination and con-artist greed way back in the most ignorant and brutal of times. In the end, that's what almost all of the world religions actually are.