I hear people discuss about it. And since the incentive model here is "value for value" kind of interaction people don't be incentivized to behave the most marginal way possible to create more interactions. By the way for example I see the "zap" icon now I started using Nostgram but I can't see the icon on your note. So your link might not be recognized maybe I don't know. These are still very new for me and trying to figuring out.