Yeah, this is what I'm saying (although absolute free speech is itself a principle). I wish it weren't so, but you're 99% right that the cloud isn't really usable for anything outside the Overton window, whether it's far left, far right, erotica, pro-suicide, extreme trolling, etc.

However if you're using Cloudflare you can "hide" your backend hosting provider and they usually won't kick you out because they don't take any reputation hit. So I still suspect a mainstream cloud (with good off-cloud backups) could work for AO3.

I think the point they're trying to make is that "normal" hosting providers like AWS, Azure or Google won't accept AO3 as a customer in the first place or yeet them the day the first DMCA email arrives or some Evangelicals yap about furries and they realize what their customer is doing. "Nazi" hosters (aka wherever Gab, Truth Social et al are hosted) or your average cybercrime "bulletproof hoster" are being used to deal with a lot of bullshit, or they just pipe any complaints straight to /dev/null - and they are used to dealing with cyberattacks of all kinds as well because they are a very, very juicy target for anyone from antifascist activists over cybercriminals wanting to cash in on Trump's Truth Social privileges to other nations' secret services that might want to sow chaos by manipulating Trump's Truth Social feed.

So... AO3 is nowhere near Nazi crap in terms of content, but a very, very similar threat model (exhaustion of customer support goodwill).