And besides, most of the guys they encountered in TNG whenever they did the "We're superior" stuff WERE inferior to the Feds one way or another and ended up putting the TNG crew through nastiness that merited at least some snideness on their behalf TO the jerks who caused the situation in the first place.
And hell, it's rather ironic that whenever the TNG crew DO act "human" by wanting to get away from an obviously annoying fellow or somesuch they get slammed for being "jerks" by the VERY SAME PEOPLE who wanted them to be more "human" in the first place!
Damned if you do, damned if you don't.
I'm starting to think the only thing they could've done is just have the crew collectively say "We're the worst people in the world and even a serial rapist is better than us, morally!", is that "human" enough for you?