Not a big fan of Class C the stock buyback. As a holder of Class A and Class C shares (from the earlier split), I thought I should sell Class C, that has no votes and buy Class A which get to vote. Mostly out of laziness, I didn't switch up to Class A, but if I can't vote with my Class A shares to buy back only Class A and not Class C, then I don't know which I would buy now. Seems like a backdoor transfer to Google employees who get Class C shares, but I knew what I was getting into with Larry and Sergey controlling the company with their B shares.
Out of curiosity, why do you care if you can vote with your shares on a company this size? Unobtainium shares(class B) already control 64% of the votes, so the odds of your vote mattering is essentially 0.