They are not "easy."
SPOILERS.........
If you read the novel, you'll understand better that these women are very empowered. They aren't in love with Grayson; they just want to live their sexuality freely and went to bed with him simply because IT WAS HIM. In this universe, dominant alphas are the ideal standard for everyone – this applies to men, women, betas, omegas, and even the alphas themselves. To give you an idea, in the novel, even the boss is charmed by dominant alphas... there's a part that describes how even his heart starts racing. Therefore, Grayson isn't like a typical playboy from our world; he's seen as a celebrity (Grayson is like a socialite), an ideal of beauty, and there's even an urban legend that everyone who sleeps with a dominant alpha will have a special experience. Although I can't find a comparable parallel in the real world, I will try to approximate it didactically as best as possible to make it clear. Imagine Henry Cavill starting to work for a short period in an establishment with ordinary people. These people become his friends and have the chance to sleep with him. The vast majority will choose not to refuse. That's more or less what happens in this story. Believe me, even among men there is, in fact, carnal desire for Grayson and... surprisingly... even among those who claim to hate him the most. I also find the women's discourse sensational when they reaffirm their right over their own bodies. Colleagues like DeAndre, who think that women are obligated to accept them in their beds just because they've known them longer and had their invitations to go out refused, are equated with real-life incels. The women's discourse reaffirms that they too are beings who have desires and the right to choose who they sleep with, and that even if they wanted to have fun with DeAndre, he's not a good choice for several reasons, mainly because of his rude behavior. Regarding their lack of support for Dane, it's based on what I said before and other things: 1) Grayson is like a celebrity (he's the senator's son and is present at many elite events and in the media), so many already knew his face and his stories even before he arrived at the fire station. 2) He befriended the female firefighters. 3) Throughout the story, you'll realize how closed off Dane is, and even his colleagues don't know much about him. Therefore, he's not close to the women at work, and most of the men there have an exploitative relationship with him.
we can learn a lot about the words we use. what exactly does it mean for a woman to be "easy"? easy like a test? like a big competition? those are more interesting when you've got to work for them, right? the harder the challenge, the more satisfying the win. there's no point in a trophy that's just handed to you. pathetic and undignified. i'd be embarrassed to show it off.
except we're not talking about trophies, are we
i think you should take a deeper look at why you feel the way you do
I can't read this fully, and only skimmed this, but I alrdy know this lol I'm just pointing out how they r so thirsty for it, that they do not give a flying fuck that next week another fellow colleague of them is gonna taste that dominant alpha cock, and it's embarrassing. How is it empowering women?? The author made it seem like they were being baddies for it(though they r baddies for pointing out that they don't owe SHT to those men) That's it
For centuries, women have been at the service of their husbands'/partners' pleasure. Even desire and sexual pleasure were denied to them. The moment women own their bodies, acknowledge their desires, and can enjoy themselves with a partner of their choice, yes, that too is empowerment. There is nothing shameful about an adult deciding to have casual sex.

I am not siding with the dudes(FUCK them, like the audacity to feel betrayed for not sleeping with them? Tf??), but the girls r easy as fuckkkk got no dignity at all, and just want to taste that dominant alpha cock bro. Can't understand this kind of mindset, knowing the person/ppl ur with has basically been easy as fuck and has ridden the same guy. And not only that, they CHEERED for the dominant alpha dude, than their fellow coworker Dane. It's rlly giving when a big friend group date each other lmao neurotypical type sht activities.