You're right, they're using class C for compensation: https://www.investopedia.com/articles/markets/052215/goog-or...
But that doesn't prevent employees from buying up class A voting shares, though:
> A shares receive one vote, C shares receive no votes, and B shares receive 10 votes
There's more investors and employees than there are the founders so perhaps it's possible for them to get enough A shares to outvote the super-vote B shares? Unlikely, but possible...
Thanks for offering your opinion, I agree with your thoughts.