Yes, Nerdette is supposed to be a fool. The real purpose of the scene of course is to emphasize that Skye was cheating on her SO, Squarejaw. (Yes, I know it's supposed to be Supervising Officer, but that's actually Coulson, so skip the pretend, pleace.) Since the SO relationship hasn't been consummated yet, Skye can be forgiven, after requisite humiliation and begging on her part. I've only seen some Firefly, Dollhouse and Dr. Horrible, so I've never seen the slightest reason to think Whedon is a feminist.
Oh you might try his complete works.
Buffy.. title character is a teenage girl gifted with more or less superpowers to fight evil (and all other females on the show have some awesome talent in one way or the other)
Firefly.. gifted girl gets abducted, experimented on and occasionally kicks tremendous ass (in the Firefly movie she is shown to clear an entire room full off insane psychopaths)
Dollhouse.. main female character kicks all kinds of ass
Whedon is known for his strong female cast.. you won't find much "damsel in distress" type characters in his shows unless they need to be rescued by another woman
However be very afraid if you start to root for a couple that's become a fan favorite and took forever to get together.. i shudder to think what would happen to either Kaylee or Simon in Firefly if the show would have gotten a normal run
I don't think the problem is so much that they're all especially good looking (they are, with the exception perhaps of Clark Gregg who is intentionally average looking), but that they're all running around with perfect hair and makeup. I can only assume it is an intentional stylistic choice to enhance that live-action comic book feel. It is occasionally distracting, but only just.
No... that's mainstream TV production targeted at a younger audience nowadays. It's the result of extensive marketing research and studio meddling which says you can't have young average looking people on the show because you might get people bored or become uninterested (never mind that Hiro from Heroes was anything but attractive but was a fan favorite because of the actor and the character he played, just one example).
Why they seem to think so is beyond me.. i just recently watched part of the pilot of "The Tomorrow People" and it was especially noticeable there.. nobody of the main people i saw for about 20 minutes of the episode would be called even mediocre looking.. all hunks and pretty girls, every last one of them. I turned off the episode.
It's also one of my main gripes initially of the show how ridiculously attractive some of them are, especially hacker girl who looked like she jumped off a catwalk to do some hacking in her van.