Most polls aren't 'important' enough to warrant the worry imo, and their unimportance means it's not likely to be scammed. 

But having fun and facilitating engagement on a social media platform isn't meaningless. It could potentially contribute to keeping people here. (Imagine @primal sidebar has Popular / Latest polls' for eg. cc nostr:nprofile1qy2hwumn8ghj7erfw36x7tnsw43z7un9d3shjqpq6c0nh3dnadzqpm76uctf5hqhe2lny344zsmpm6feee9p5rdxaa9qqh8vzc a massive improvement already on the current options and a tool for engagement / discussion. )

You could say the same thing about zap polls, you could just have zaps with an Yes emoji message and zaps with a No emoji message instead. Do away with polls altogether.