Visa, Paypal and Mastercard happened. They're on a censorship crusade. There's lots of videos on YouTube reporting on all the details if you want to know more.
Then you missed Itch.io's temporary hiding of all nsfw pages. And the new rule in Steam's terms of service. Also, they're not targetting all NSFW content yet, they're starting with inc*st, non-con, and anything that could be construed as having p*do content. You can be sure that will expand eventually. Seriously tho, tons of YouTubers are following the issue, so if you want more info, check there.