I'm a startup founder. Not only that, but I'm a startup founder that just last year considered attending YC during the summer session after Altman invited me (and, more likely, my then-cofounder Patrick McKenzie). I have friendships with people inside of YC, and with YC founders. Moreover, the company I'm building now works exclusively with startups, most of them at the YC stage of development, no doubt many of whom will actually be YC companies. How likely am I to get that invite again?
Furthermore, Peter Thiel is famously the most vindictive investor in Silicon Valley. He bragged about it, I believe, to the New York Times. I've had the pleasure of being blackballed by a group of different VC firms in the past.
If you think I have nothing to lose by antagonizing Sam Altman and, I guess, Peter Thiel (I think I have some safety from being too insignificant for Thiel to care about), I'd ask you to reevaluate.