I'm sure you're more than enough smart to be at Google :) It's just practice and luck.
I completely agree that people who prefer to ship fast would be happier at AWS. I've heard all the horror stories about how slow Google is, but I think GCP has a great balance between speed and quality. I'm definitely happier here, but I understand why some people would be happier at AWS.
It's why most Google X ideas flame out. It's why there's a new chat app every year.
But - it's a net positive for humanity. Google publishes a lot of papers, and I think genuinely has moved humanity forward in the last few decades.
I don't have a PhD and I don't do L33tcode, so I don't think I'm smart enough to be at Google, but honestly I don't know if I would want to be.
I prefer shipping.