Is Trump a disgusting, bigoted asshole? Sure.
Is most of what he says inappropriate? Yes.
That being said, do I think Megyn Kelly is a disgusting, vile human being? Yes, I do. Nothing to do with her appearance. She's just a nasty, dishonest, vitriolic person, a conclusion I've made after watching many dozens of her interviews and commentary on every subject imaginable.
Does that excuse Trump's behavior? No. But you won't see me feeling any kind of pity or sympathy towards Megyn Kelly. I've seen her do much worse to interviewees on Fox news, and make much more vile and dangerous accusations (ie. bigoted, xenophobic, islamophobic, racist) than what Trump has done.
Also, the fact that Trump has such a dominant position so far in popularity tells you ALL you need to know about the republican base. You won't find better example against the sanity and rationality of the type of voter that this party attracts. Trump is everything they wish for in a candidate. Petty, nasty, simplistic, dishonest, hateful, xenophobic, brash, undiplomatic, etc. This is the guy that was still demanding "proof" of Obama's legitimacy (ie. birth certificate) during his 2nd term in office, and he's now the republican front runner. The horrific, vile nature of the republican front runners is sad, as is the fact that we do not have a legitimate "2nd" party than this trash.