This is not accurate. The engineers working at Google are talented, hard-working, and intelligent.

Not everyone is interested in starting their own company; some people like working in larger groups on bigger projects and not having to worry about all the non-engineering that goes into a startup.

Moreover, just because you're convinced you don't want to work at a big company doesn't mean nobody should work at one. OP is perfectly reasonable for choosing a new experience to see whether they'd like it or not, even if it's one that's unpopular among some crowds.

And having Google on your resume is a nice bonus. Even if OP decides to stick with startups after, this will help with getting hired and/or funded.