Just wanna say thanks guys, you all confirmed what I was thinking (that the Samsung OS would literally be both Samsung and Google's OS and privacy issues slapped together).
FlyingStars_ , in the bootloader page you sent it says this:
"AT&T does not allow you to unlock your bootloader until your phone is network unlocked, and AT&T has a history of refusing to network unlock phones for zero reason. However, some recent posts on XDA have claimed the AT&T Pixel 9's bootloader can be unlocked if you set up the phone without an AT&T SIM inserted."
From what I saw tho, people are talking about the Pixel 9 Pro XL (apparently also offered by AT&T, which has an artificial blacklist apparently. Yikes!). Is it worth the gamble to go for it?