>>2969433I don't actually know, to be honest. I feel like I knew at some point, but trying to Google it just now has gotten me nowhere. I think I read some post that said they were doing it and provided a reason, but I can't remember it. Maybe they were just making it up.
Or maybe it's less of a boycott and more about using a platform that more people use, even if it's shittier for art. Since everyone in the world uses Twitter, but not everyone uses Pixiv. Quite a few artists seem to use both.