I mean ... sure. There's lots of people out there who have annoying personality traits that some people are going to be put off by.

In my mind, though, the difference between annoying and insufferable is whether or not you're willing to admit to being incorrect. And Jonathan Blow has gone on record to talk about his failures, flaws, and when he was definitely wrong. So while I can sympathize with people who don't enjoy him on like a personal level. I think it's objectively unfair to sink to "insufferable."

Also, I personally get a LOT of mileage just avoiding people and conversations about things that annoy me. Of course, I suppose your mileage may vary.