Fellow poster above beat me to it, after some research it seens that this is the case
https://www.reddit.com/r/tickling/comments/17wtkq1/spankbang_has_added_nothing_recently/?rdt=39402
I’m a ‘niche’ content creator (pregnant futanari, male on futa) and i’ve seen it happening before with Pixiv, after a company fails to control the content uploaded to their website, their only (very drastic) choice is to completly remove the ability for users to upload said content OR create a new ToS to disallow said content.
As for why sites are doing this? My understanding is AI CP, akin to what happened to Apple and Tumblr, but instead it is Visa and Mastercard that pressure these Porn sites to crackdown on CP content or they lose partnership, does this kills the website in the longrun (Pixiv, Tumblr, etc…) yes it does BUT they will still make some profit over the years instead of downright taking the site down or cutting ties with the CC companies, this is just a theory, but a plausible one when we take in consideration these companies want to avoid headaches, maximize profit and minimize loss.
I’m out of sites to upload my content at this point, and 4chan is not an option due to topics being closed less than four hours after creation and the incessant transgender hate which is what my content falls into and what i enjoy creating, Twitter is also a no go due to high amount of bots, you are unlikely to even get a single ‘real’ user in your Patreon account from these views considering getting real Patrons from legit websites with real viewers is hard these days.