I’ve been using Sync for Reddit with my own API key patched into it (there’s some guides on how to do it for most of the popular apps!) and NSFW content still shows for me, including NSFW subs. I read that they were supposed to be stopping that on July 5th and it’s currently the 6th. Still can happen, but perhaps there’s a chance they’re not stopping NSFW for personal API use?
If reddit kills my patched third party app then I’m done using it on mobile, and if they kill old.reddit then I’m done using it on desktop. I’d switch to Lemmy or kbin full time but the content variety is VERY low compared to reddit still, especially for more niche topics like specific games or hobbies.