Whether it's for the military or not, I find these women's behavior gross and their followers pathetic. It feels like we're veering into post-feminist territory where attractive, charismatic women can market themselves on the internet and society can't offer a reasonable objection without resorting to social conservatism.
There is no reason to believe that social norms can only change for the better, and in fact a lot of evidence that they aren't moving in a positive direction.
The US right may be overreacting to this by rolling back too many changes and throwing out the baby with the bathwater.
But that doesn't mean that conservatism in general is a bad idea. There is certainly something to be said for assessing the outcomes of a change before running many experiments in parallel without a control group.
Manipulating people with sex is nothing new, and we will keep finding new ways to do it with every new technological innovation.