The only trouble is that not everything NSFW is porn. Your suggestion only works if you never want to see things like potentially-disturbing news articles, fail videos where somebody gets injured, etc. either. (Or if you’re a sicko who gets off on that stuff too, I suppose!)
Create 2 accounts. One for daily reading with NSFW turned off, and another account with NSFW content for one handed reading. Problem solved.
The only trouble is that not everything NSFW is porn. Your suggestion only works if you never want to see things like potentially-disturbing news articles, fail videos where somebody gets injured, etc. either. (Or if you’re a sicko who gets off on that stuff too, I suppose!)