Given the myraid of issues they seem to have, I am not sure I would classify Pixels as having polish. But yes, they definitely have the talent to make some good hardware. It's just a matter of whether their priorities match those of their users.
I can't think of a major phone brand that hasn't had some kind of major issue over the years. The batteries of the Note 7, iPhone "antenna gate" (and the more recent lack of advertised AI debacle), etc.
I think Pixels are pretty polished, at least compared to all the cheapo off-brand Android options out there. Some people like Samsung better but I can't stand their UI. Apple would be fine if I could sideload...