Same reasons why girls don't like "players" or a "fucboi".
The reason why some guys don't like "promiscuous" girls is because of the way they carry themselves. This doesn't apply to just girls or relationships but to all people in general, it depends on a lot things like the values you were brought up with, what you define as moral or unethical, what characteristics you believe demand respect etc. Sure the way you dress might show you are confident and don't care what others think, but that doesn't mean people will always respect you for it. Same way you can't really be a doctor covered head to toe in tattoos and piercings, no one is gonna trust you or take you seriously. You might be an excellent doctor, but that won't matter, first impressions matter a lot.
No need for some sort of ridiculous theory, just understanding simple social behaviour. While you shouldn't judge a book by its cover, unfortunately generalizations exist for a reason. These are usually the same girls you see on social media partying it up in the club holding drinks in their hands with a photo caption of "goals or slaayyyy gurl !" They're just so basic. That's not exactly the type of girl you can or want to bring home to your mom. Now, for some guys, that's not the type of partner that they want. On the other hand some guys would love a girl they can go out and party with. It just comes down to preference, there is someone out there for everyone.
As for my own taste, i don't want a "girl", i want a woman. A woman has her life together, she knows what she wants in life, is motivated by her passions, she knows she's confident and doesn't have to prove anything to anyone.