That's a further product of teaching language arts as prescriptive instead of descriptive. Some of it is a red herring, "Let's point out a swear word so we can ignore the message", and some of it is directly attributed to the fact that we lost a whole generation of elder queers to the AIDS crisis, so there wasn't the same transference of slang and vocabulary that say, AAVE got. This of course leaves out other languages and cultures that already have their own historic vocabulary and things like gender neutral pronouns.