I don't know what the Big Hate is. Maybe he really did something genuinely abhorrent. His sin appears to be that he does not genuflect to current hemlines. We do not like being reminded the worms in our heads are as perishable as those of the people we despise. Or, for that matter, that we can take no credit in our values. Born in another place and time, we are the slaveholders and the Good Germans. We aren't special. We're all driftwood.
Being ethically superior is a matter of the good fortune not to be born to derps.
On his ability as a comic, from what little I have seen a good number of his jokes show he is looking inside the joke to see what humor consists of, and playing with it. Good comics do this. Mulaney does it. Burr, Ansari, Jeselnick do it. Seinfeld, who has never been funny in his life, does this, or anyway Larry David does it and then tries to explain it to him the way you'd try to teach an elderly dog not to piss itself. Oswalt's whole thing is climbing inside those mechanisms and tweaking them. Burnham does it in song, which is super impressive. None of these are timeless -- none will last -- but they have an idea of what they are about and they are messing around with the acoustic equipment, they aren't just laying down tracks. They aren't the Beach Boys, but they aren't Styx either. They're ELO.