If my partner visited one by himself or lied about it, or spent an inexplicable sum of money in one, I would really take issue.
However, if he went out as part of a lads' night, I would be okay with that. Yes they are seedy but boys will be boys.
Chances are, the average male visitor will only pretend to be enjoying it so he doesn't look weird in front of his mates because if you're a heterosexual male not turned on by the site of a writhing, scantily clad, cosmetically enhanced little nymph, quite frankly you're a bit gay.
The average male will sit there with a big grin on his face whilst thinking [i]this is sh¡t, I want to go for a curry[i].