Many of them apply to every major communications service.

I could cite examples of harassment and "stochastic terrorism" on Twitter, reddit, Facebook, etc, but I doubt I need to.

Correct, and the difference between them and KF is (a) their market cap and (b) the work they've done, consistently, to address issues when they come up, up to and including using automation to scale the moderation pipeline.

KF either can't or won't keep its house in order, and at this point, the can't-won't difference is immaterial. I welcome someone making a solid run at providing another channel alongside Twitter / FB / et al, but this ain't it.

That difference is, I fear, ideological rather than principled.

Think of all the harassment directed at Kyle Rittenhouse, or the Covington Catholic kids, or just Republicans generally, on reddit and Twitter. Harassment was featured on the front page.

That isn't a small problem that the moderators are unaware of; it's an ideological belief that certain harassment is acceptable.

It's almost certainly both, because Nazism is also an ideology (one with no platform given and no platform deserved).

FWIW, I've gotten kicked from FB far more often for vitriolic criticism of the right than the left. At least to my eye, they try to steer an even keel... If people are seeing more Republicans get snagged, I think it's because of their own social circle (because filter bubbles are pretty thick these days).