Maybe not, but it could at least help fund relays that may otherwise go offline due to the extra cost of spam. There's a similar advantage to all the one sat spam transactions I get on Lightning. Sure, it sucks, but at least fees are being paid and even I'm getting wealthier by some micro amount. That's certainly better than getting absolutely nothing from spam like now. It would also be cool if users could set a fee for interacting on their notes. I doubt anyone who can't afford a few sats are or whatever the amount is are going to say anything I really care about anyway. It's probably just going to distract me and add no value.