Desktop mode on mobile still works fine for me. That said, I really don’t feel like having to login when in incognito mode when I want a cheeky wank in the loo.
For me this morning on ios it was forcing me to use the app to view nsfw content otherwise return to the homepage was the only other option. They're probably a/b testing, but either way, it's an immediate exit for me.
I think you missed the part about using desktop mode. On Safari it’s the option “Request Desktop Website” on the menu that comes up when you tap the “aA” icon on the site.