I think to some extent one's perception of whether somebody has self-respect or not is subjective, because everyone holds different values. For example some people value a lot. Then if I turn down a job with a high salary because of moral reasons, they might perceive me as having less self-respect. In this case, I value intimate relationships to a higher value and think sex should have meaning beyond, "I wanted to have fun that evening" ...
I think just about every self identifying feminist would say that their attitudes towards promiscuity are in line with this statement.
The whole point is that there are a lot of people who want to have a say in how women have sex, and with who, and the feminist perspective is that it really isn’t any of their business.
If you find that people call you a conservative that’s really the main reason why, if you are happy in your own relationship then it really should matter to you how people view their own sex life. While you may view other peoples dysfunctional relationships to be a result of their sexual behavior, in my expertise the sexual behavior is almost always downstream of the dysfunction, whether the individual is promiscuous or not.
But for some forms of dance - this is the normal way to dance with anyone.
Some folks go through a similar journey with sex. They don’t put it on a pedestal anymore and see it as something that is holy. It doesn’t mean it cannot still be incredibly special to them or pleasing. It just means that they can enjoy this aspect of life without needing an extremely involved emotional connection. Similar to dancing.