Don't act like the main raison we see that many corrupted sisters is because some people are thirsty as fuck.
They may not be GKs, but they're still a canonically corruption-resilient faction. Their rules literally give them supernatural saves against the warp and even physical threats because of their undominable faith.
Yet we see slaaneshi sisters here so often that they've become trite. They've become regulars, unlike hereteks or traitor guard that are wayyy more common in the setting. I wonder what's the reason.
I'd bet /tg/ produces more of them than regular CSM slaaneshi warbands, even.
And we see barely any khornate sister OC despite the SoB fanatic tendancies, no nurglite sister despite hospitallers being a thing, and absolutely zero tzeentchian sister despite the orders famulous and dialogus.
Geez, it's almost as if corruption was one of the major fetishes on /d/...
Also, Blanche is unable to make a woman that isn't a sex bomb. Have you seen his Sisters of Silence? They're latex dolls. His female techpriests? Walking boner generators. His guardswomen? Well painted courtesans. It's pretty stupid to judge a faction according to your interpretation of the sexual undertones in a couple pics. Go and tell me that Kopinsky's, CA's or Inquisitor's repentias are inherently sexual. Same with any of their portrayal in the fluff.
See pic for the original SoB art and lore, btw. Such depravity... You're just cherrypicking in order to justify your fetish.
It's fine anon, you can have your wank with sororitas if you wish, but don't pretend to be an intellectual or a fluff-custodian in the process.