I browse in iOS Safari private mode. Reddit has now started to entirely block many subreddits from my view. It pops up “Continue in app/ go back to r/popular”. I do not know how it determines which to block; newer and less-popular seems to a pattern.

I have been finding ways to bypass their blocks, so my apologies if they decide to make it an entirely private site.

Edit: using the www prefix, not old or i.