Yeah if it was brand new, it might also have been defective, I’ve seen that happen. It’s just between jailbreak and manufacturing defect, which do we default to? Depends on the whole timeline really.
It’s not impossible it broke it, but anyway the Pixel is made for that so it’s a lot less sketchy to begin with. It’s the same risk as installing an OS on a PC really.
Google releases betas and developer previews for the Pixel, it’s made to survive buggy code.