Shesh.. Look, the trial would be "fair" as in done by the rules. Let it go...
I can't help but notice that you didn't answer the question. If the rules stated that he wasn't allowed to speak in his own defense, is the trial still fair just because that's how the rules are written? If your definition of "fair trial" means that honest people apply ridiculous rules equally to all, then yes, it's fair. But that definition of "fair" would apply to a system that simply executed every defendant without hearing any evidence either way. As long as it's done by the book and nobody gets special treatment one way or the other, why not?
Again, if you want to claim the LAW is not fair, fine, but don't confuse the LAW with the trial.
The law and the trial are not separable in this case. The law determines what arguments can be made at the trial, so treating them as two totally unrelated things is nonsense. I'll clarify that I'm not impugning the motives of the jurors or the judge. But the "trial" is more than just people. It's people and rules, and those rules are a mix of written law, tradition and precedent. Unfortunately in this case, those rules come together in such a way that one of the basic principles of a fair trial, the ability to speak in one's own defense, is missing.
He is innocent until proven guilty, will be afforded an attorney, will be given a trial before his peers, face his accusers and present evidence at his trial. This is NOT a kangaroo court.
This is where we disagree. If he's not allowed to present the best evidence in his defense, then he's not by any reasonable standard being allowed to "present evidence" at his trial. "You can present evidence, but not the evidence that might convince a jury," is a meaningless guarantee. Without the ability to present true, relevant statements in your own defense, it is a kangaroo court. The fact that it was set up that way by law and the fact that it's offensive to call it so doesn't make it any less of a kangaroo court.
That's not how we've done criminal justice for centuries. It's a mess that we've slowly allowed our courts to evolve into by steadily adding rules for excluding evidence and arguments. For example, strict liability in criminal cases only really started in the late 19th century, and its liberal application to serious crimes (as opposed to regulatory violations) is much more recent.
Just like the slow stripping away of due process for suspected drug offenders, all branches of government have been complicit including the courts. New laws were written, new court precedents were set, and before we knew it, we had a system that allowed asset forfeiture without a trial and prevented criminal defendants from presenting true evidence in their defense. This is just another example of exactly how far we've drifted from those traditions you reference. Those are traditions that we should be proud of, and we should be screaming bloody murder at every step away from them.