Patched Sync for Reddit still works, but using Relay for Reddit now tells me to use the official app to browse mature content.
A couple of notes: being a mod does work around this block. It also appears that reddit is blacklisting NSFW from an explicitly defined list of client ids, meaning Revanced-patched apps are not affected at all and you don’t have to be a mod.
Nsfw is also dead on mobile web. And just a reminder that nsfw isn’t just porn, it’s also cannabis and vape content, and likely other content that touched “sensitive” subjects.
NSFW seems to still load if you use old.reddit.com