Yes that is black pill talk with your typical misogynist spin on it. Maybe you've only encountered manipulative narcissist women?Women are only nice to people who are useful to them. That’s not blackpill talk, that’s just how it is if you stop and observe it. I dunno how many women I’ve dated that turned flat out cold towards me after they decided to end it with me. It was like a personality shift.
I get the sense you're the type of guy who does not take breakups well. I'm guessing you get pretty vindictive and nasty with them -- I mean, you're already quite vindictive and nasty about them on this forum. Hence your consistent experience of women switching gears with you when you don't accept their decision gracefully and leave them alone.