That is called competition, not censorship

Nonsense. That's assuming "proof of brain" actually exists. Look at this bloody thread. The only reason why people voting stuff up is because they think their comments need to be the ones that's visible.

Ever heard of "upvoted for visibility"?

If we make a SE token that can only be earned from being downvoted, then it’s okay?

Face it. It’s never about censorship. It’s always been about money for the likes of you. Only exploiters ever argue against downvoting.