Right, but it's not like it's a new rule. It's a rule that's been in place for quite a long time now, a rule that I actually have had a few warnings on myself, actually. The fact that it's gone on for so long without being called out on is evidence this place needs some control and moderation. Those were the rules they agreed to when they all signed up. If they had a problem with it, why not bring it up at the beginning? But they didn't, and they (and myself) have just decided to break it whenever without consequence, up until now.
You are right, and I do agree that if it is a rule, it should be enforced. However, regardless of the reason, it has been brought up now - and I think it is something worth at least questioning. I would assume that cursing is against the rules to protect younger members. I can think of no other reason why it would be. However, it seems that most of the active members here are adults and as Maria pointed out, there is an entire section dedicated to pornographic content. To me, and apparently several others, this particular rule seems pointless.
Well, I'm pretty sure it's possible to add a script to make the hentai forum inadmissible to minors. (Since they have to put their birthday in when they sign up), and like I said, people bothered by porn can avoid the hentai section. People bothered by swear words shouldn't be expected to not join in discussions about Sailor Moon.
Anyway, people of all ages and backgrounds should be welcomed here, and we shouldn't make this an uncomfortable place because of unnecessary profanity.
Honestly, you're not being censored, you're just being asked to speak tastefully.