Ahhh, xjuliesss, I know anecdotal/personal experience is actually pretty irrelevant when we get into discussions like this, but I can't help myself!
I stream purely for the social experience, and I don't think other female streamers who capitalize on sex appeal are taking anything away from me (even though they definitely have more people clicking on their stream, which doesn't mean they're taking anything from me though). I genuinely appreciate the fact that I haven't been subjected to the relentless stream of toxic viewers who visit their streams. And, we know that they aren't attracting new consumers to Twitch, so it's not like they're introducing terrible people to the platform. I appreciate how infrequent a straggler wanders into my stream and says something that ends up being hilarious in the context of my stream. There's no way I would have the willpower to keep at it if I didn't have the incredible community I have now. Considering the social ecosystem of Twitch in this moment, I am grateful for the diversity of sexual expression on Twitch. Ideally, sexual expression won't be constricted any further on Twitch, but we'll all feel grateful for the personal freedom while indifferent towards how others choose to behave.
Honestly, if someone's main motivation for beginning their streaming "career" is financial gain, then their behavior is manipulative regardless of whether they're trying to sap money from their viewers with sex appeal or false friendship (and I must reiterate that this only applies to streamers that are in their infancy in terms of channel growth, a stage that requires a degree of intimacy to progress).
The rate of growth that incredibly attractive, intentionally sexy streamers experience is just fine with me. I don't believe I would experience that growth if they weren't streaming because I don't have value to their viewers. Our community needs to stop feeling resentment towards people for their clothing/suggestive behavior. It's irrational and toxic.
However, I completely agree with you when it comes to the fact that the onus lies with Twitch. It was incredibly disheartening to realize that their dogma of community above all (which appeared to be the foundation of their business model from what I gathered for college presentations (lol)) was pure marketing. I was so isolated from the network of streamers I used to watch that I never saw Twitch's contradictory behavior until I started streaming. Now, I'm not saying I deserve to be partnered, because I definitely don't, (but I really really want to stream in 1080p like YouTube offers) but I can't imagine that the trade of associating your brand with content that normalizes toxic beliefs and behavior, reinforcing people to accept demeaning objectification as something to be expected on your platform, just for immediate but limited financial gain is anything but myopic. I understand that building a company on community alone is probably a pipe dream, but there's no way that monetizing objectification is sustainable compared to the longevity of monetizing users' identity and belonging within a community. At least I hope it's not, because that would be incredibly depressing.
Now, I do want to say that I'm aware Twitch is in constant fear of lawsuits. But, it is their platform, and they are providing as service to independent streamers. It's not like Twitch is public school or something. I don't understand why Twitch can't allow streamers to continue their current practices (in order to absolve them from policing people's skirt lengths, which would be messed up anyway), but simply choose to not directly associate themselves with streamers who blatantly (yet implicitly) normalize objectification.
If Twitch unofficially attempted to put this into practice, Twitch would still receive payment for all their ads while encouraging the community to stop normalizing objectification, which could improve social interaction while preserving streamers' choice to handle objectification exactly how they choose, but with (admittedly artificially restricted) monetary gain influencing everyone towards a healthier community. Twitch can't stop everyone from being awful, but at the very least it can work towards influencing people to act more like a community.
God, I've been rambling. I know that there's no way my suggestions could be feasible (or that anyone will read through all of this) because there's so much more behind the economy of Twitch that I don't understand. I just wish Twitch would be more transparent so this community could understand all of the financial factors that caused this system to be the way it is, hopefully leading all of us to stop trying to eat each other. I'm still excited to be a part of Twitch's community, but I hope that something pushes the pendulum back towards establishing that objectification is not expected here on Twitch, and that we're all here just to have a good time and hang out with others who like games just as much as we do.