In fact, registrars can refuse to accept names that contain obscenities, cusswords or what is considered racial or religious slurs.

I meant more in line with a business trade name.

Maybe "gofuckyourself" might have difficulty obtaining a trademark because the expression is also an insult with an obscenity in it.

99%+ of registrants would have no problem.

I would imagine many states might refuse to incorporate "gofuckyourself.com" for the same reasons.

But even if you choose to do business with a name that is less than "politically correct" ? if that name is of so much value to you pay ICM off and defensively register the name. So what if it may cost you $100 a year or so. A waste of good money, I agree, but a necessity that ICANN has imposed upon you.

If you tried to start a WIPO action on the abusive registration of "fuckyouintheasshole.xxx" they would laugh you out of court.