It's not controversial. Many people want to view porn. If they are adults, rock on. None of that stuff is acceptable unless it's tagged appropriately so people who don't want to see it/get exposed to it can actively filter it.

I think I'd rather see porn specific relays than clients. If you don't actively add those relays to your clients, you wouldn't see the content at all. That's a better solution to the problem, IMO. I'm not knowledgeable enough to know if this is the best solution, though.