I think you are probably getting downvoted because it's Google Docs, running on Google's Servers, with Google's autocomplete and grammer checkers and spell checkers and auto-templates and everything else running against it.

Of course "Google" can read your doc. That has nothing to do with "you being the product" (infact it's the opposite since free Google Docs is a loss leader for their paid GSuite product).

That doesn't mean a person is reading it.