Why not?

1. By buying a Pixel phone and degoogling it, you are rewarding good behaviour and punishing bad behaviour, corporations need to be trained like dogs.
2. Google is not going anywhere and their primary objective is profit. By buying a Pixel you are signaling to them a viable revenue stream that doesn’t violate people’s privacy.
3. You don’t even need to give money to google directly, you can buy a second hand-one.

I say, vote with your wallet.