Ok, so apparently being a caring asshole (aka faking it or having natural anger against women) is a definitive tell of betaness and should be dropped out the window. An uncaring asshole is someone who simply doesn't give a fuck about the outcome and expresses little to no interest regarding the outcome.

Now my question is, how can I act aloof if when it comes down to it I'm the guy doing the initiation? Doesn't this sort of contradict the whole premise?

Some time ago I saw a video from RealSocialDynamics where they explained an analogy of the girl being a TV in an electronics store and the guy doing the pickup is the client. Sure the TV looks awesome but does it have high resolution? 3D? How many HDMI ports? Etc. This supposedly portrays the "I like what I see and it has piqued my interest but I want to get to know you and see if you qualify for my attention".

But what if after the chitchat she still doesn't bite the hook? What can I do after a rejection if I'm supposed to not give a fuck since I'm the aloof uncaring asshole?