Again, they're idiots. They're not supposed to be role models. Just the opposite, in fact.

It's an important point, because it goes to why the cast couldn't "diversify." The writers just didn't have the guts to make the lesbian couple a pair of idiots, which would make them funny. When Ross dated a Chinese girl and then a black girl, the writers wouldn't let them be stupid, so they couldn't be funny, and they couldn't stay around the show.