Let's be real:
A little bush don't hurt nobody, and it's pretty hot. Not all bush has to be unkempt, unclean atrocities.
Pretty sure most people don't care about the bush, the conversation seem to be mostly revolving around armpit hair and leg hair.
My 2 pence:
I like smooth armpits, therefore I dislike non-smooth armpits. Same goes with legs, a woman's smooth legs is just

That feeling of of rubbing up against her is divine.
Why do I feel that way?
Because of society, because these are sexual preferences that are the result of societal wide preferences conditioning me through my critical years. I highly doubt cave men cared about hairy legs and armpits. If a woman doesn't want to shave her leg or armpit, that's her prerogative, but that'll be less attractive to me.
Def. no reason to belittle or ostracize the people in question though, so Opiate is on point.