The opposite of negativity isn't perky cheer, it's uncertainty.
We all know at least one perky person. This the best day EVERRRR, isn't everything awesome? We dislike these people because it seems phony: they're trying to show us how great their life is (and maybe convince themselves). As the kids say nowadays, perky is performative.
We all know negative people too, think about them for a minute. That's a stupid idea, that will never work, WRONG.
What's the intention behind negativity? It's to shut down possibilities. The rejection of uncertainty.
Uncertainty is hella tough. But it's often more honest, and therefore more accurate. The pessimist and optimist both act based on emotion.
Will this idea work? I don't know. Positivity embraces possibility.