It's because itch.io is a shitty platform that sucks, run by people who do not have any values whatsoever. Itch.io tolerates homophobic hate speech, it tolerates racism, it tolerates intellectual property theft, it tolerates fraud. It tolerates fraudsters making entire games to harrass people who call them out on their fraud. The one thing itch does not tolerate is being called out on how much their shitty platform sucks.