When you go to a person's house, do you curse up a storm if they don't care for it? I imagine you respect their wishes and the lifestyle they live while in their home.
I'm all for personal freedoms. And obviously I've vouched for it a bunch in discussions on this board. But I also recognize that it's their site and if they want it run a certain way, it's their prerogative even if I'm not crazy about it.
House rules, and that sort of thing.
Another forum I frequent and moderate at uses PG-13 as its language standard. That site has a short list of profanities in its banned-word filter. (If you've watched enough PG-13 and above movies, you can probably guess which words you'd never hear in a PG-13.) As a moderator there, my rule of thumb for language is to allow anything that isn't on the banned-word list, as long as it's not a veiled profanity meant to circumvent the banned-word list.
Honestly, it'd be easier to moderate with a tighter standard than PG-13, like RedsZone has. Too many "edgy" words at the other place tend to be aimed at other members. That makes the other place less friendly at times.
Suck it up cupcake.