Would you consider a woman slutty for letting a group of guys have their way with her?

I don't know. Probably not slutty but issues for sure, I don't think of it as slutty, people have kinks. But the reasons behind promiscuity are many but many women that are like that have daddy issues and I'm not being mean, that's literally what it could be. That and trauma so it's probably not healthy especially when one gets older and never learns to deal with trauma so they rely on looks and men wanting them. When men don't want them no more, it can be bad.

Note though, that I just said "many," not all women are like that but there's low key reasons behind one who acts in that manner. It could just be a kink too.