The main kbin subreddit still exists although it has few users. https://www.reddit.com/r/kbin/
Reddit really has become trash. I’ve deleted my accounts and apps. Good riddance.
If not, here's what I got (Firefox on Android):
- Mobile = "Unreviewed content" banner, must open in app, no option to view
- Mobile, pretending to be desktop browser = loads fine
- https://old.reddit.com/r/kbin/ = loads fine
Even more, you can visit any NSFW subreddit in old site (eg nswf411), click 'view 18+' and now see any age gated subreddits. Though if you access it through from any GDPR country then you need to accept GDPR consent first on new site and only then move to old.
My only options are "View in App" or "Take me Home".