It supports Google by making their reseller market strong. People will buy pixels knowing they will be of value on the reseller market thus strengthening the primary market.

That's the problem with buying a used Pixel.

Probably depends on the market. Here where I live they are like Nintendo games: near-full price even when second-hand.

Used Pixels are often pretty misused and refurbished ones cost the same or even more than a new Pixel in my country... which is actually insane. Hopefully the new Graphene collab phone will be good.

I bought my Pixel 6 Pro refurbished and carrier unlocked and installed GrapheneOS. Pretty happy so far.