Just want to add to @ofwaterfall's point that commiss.io and itch.io are two more .io sites that claim to be NSFW friendly and have been mentioned in this whole discussion on twitter. I suspect they're just unaware of the restrictions. A shame, because I really like those platforms.
Though the folks at Pillowfort did mention they were planning to change domains to remedy this, last I heard.
Also, on a similar note, for those of you thinking about creating your own site to escape censorship, research your host! Most, if not all, hosts have content guidelines as well, and they're not always easy to find.