Why do women seem to go for obnoxious guys?

So I (33m) had a bad day and decided to go out to a bar. The bar is empty, apart from one pretty bar maid called Angie(26f) I sat down and started ordering drinks and we started talking. We had a really long conversation which honestly meant a lot to me. As I was about to ask for her number in walks in around 6 guys, all early 20s. One half black guy, and 5 white guys with the half black guy the obvious ring leader/“alpha”. The main guy marches right up to the bar and asks for a “slut juice” (which I learned is apparently a double vodka with lemonade and lime). They all individually order the same drink and a few of them go off to the pool table and start playing pool.

The “ringleader” stays at the bar talking to angie. He asks her to change the music, and she tells them to use the jukebox. The guy says he doesn’t wanna pay, and says he knows she has an aux in the back. She says she’ll get in trouble and the guy says “not even for me?” and to my surprise she goes and puts his phone on the aux in the back. After this they carry on talking and he asks her what her favourite drink is. She tells him sex on the beach and he laughs and tells her that’s a super “basic” drink. She tells him that slut juice is much more basic to which he responds “you know you love a good slut”. I thought this was really crude but she seemed to find it hilarious.

As time goes on the main guy continues to be super obnoxious, telling his friends how trash they are at pool, asking angie to give him ciggarettes (which for some reason she continually does) and stuff like that. Eventually angie asks if he wants to leave a positive review on tripadviser as if he mentions her by name she gets a bonus. He says “I would if you were actually good at your job”. She feins offense and says “I’m good at everything I’ll have you know”. The guy crudely replies “I bet you are” which gets a bunch of cheers from his lackeys. She laughs and says “I didn’t mean it like that but you’re not wrong”. He says “we’ll have to see about that” and she replies “if you’re lucky”. At this point I’m dumbfounded how this sweet, pretty, intelligent young woman is playing into his bullshit.

As time goes on it hits 10:30pm and starts raining, and 3 of the lackeys leave, leaving just the 5 of us in the bar. The ring leader complains about how he doesn’t want to walk to the club in the rain and asks angie if she would drive him and his friends. She agrees but says she won’t get out until half 11 unless people leave sooner. The guy turns to me and starts pressuring me to leave and angie just doesn’t say anything. He starts turning off the speakers and gambling machines and rushing angie to shut the bar and she actually does. He starts barking orders at his lackeys to stack the chairs while angie counts up the till and then she comes from round the bar links arms with the guy, kisses him on the cheek and says “thanks for helping me close”. He asks if she’s gonna party with them and she says “well I could come for a few drinks” and they pile into her car and drive off.

As I walk home drunk in the rain I just feel rage and then despair. Why do women go for guys like that? Crude, obnoxious, assholes with huge egos? Me and her had a deep meaningful conversation and then in walks in some typical “alpha male” and I become invisible. What is it about guys like that that makes seemingly smart, nice women go crazy?