I'd like to stress, though, that evolution doesn't have anything to do with the origin of life. The first life could have formed from chemicals in the early earth's oceans, been created by the Designer, left here by aliens, or drifted in on a comet. Doesn't matter. Evolution can't happen until life can replicate itself. It would certainly be nice to know how life came about, but it's not relevant to evolution.
It think that observation is truly key.
I think the true reason you get the word "Darwinist" tossed around from time to time is because you have two active factions of Religious Philosophy that are abusing the science by committing logic fallacies to try and "win" an argument over metaphysics. The faulty premise in their pointless bickering is that somehow Evolution contradicts the existence of a Creator Deity.
About the only thing Evolution truly challenges are odd notions of folks convinced that the first human being was literally molded out of clay.
The entire notion of an Judeo-Christian Deity demands that such an Entity be responsible for the laws of physics that govern the universe itself. As a consequence the process leading to the stars, planets, seas, and all living creatures forming are all themselves part of an elaborate Act of God. Hence, man's formation through evolution is likewise caused by God. The mechanics of creation and evolution don't directly speak to the existence, non-existence, or nature of said Deity.
People try to interpret those mechanics to find answers, but that's like asking someone what they think the clouds in the sky look like. It is more likely to tell you about the personality and feelings of the observer than anything else. Some people want to see a flat, empty continuum. Some people want to see the Mind of God.
Most serious theologians don't have trouble reconciling this issue, nor do most serious scientists. The fringe fundamentalists and the militant atheists, however, get themselves all worked up over it. They also seldom target any but the most uninformed bystanders and scapegoats in their attempts to assert their doctrine, as opposed to counterparts with education in theology, philosophy, or the like.
The meta-physical arguments address a question of the purpose of human existence.
The scientific arguments address a question of the mechanics of human existence.
They can both the question of "Why are we here?" due to the frailties of the English language, but that's about it. They don't have much to do with one another.