This is a massive and common misunderstanding. Publishing a block is NOT voting on its validity. Every node, regardless of stake accrued 'votes' (the correct word is 'chooses') independently of the validity of blocks just like in Bitcoin.

Blockchains that allow protocol changes via votes are an option, and how you quantify votes is a parameter, but PoS is not tied to being a government token, and 'votes' on forks (its really not a vote as both protocols exist after a fork) are made by large and small holders alike. It has nothing to do with amount of currency owned.