Well, is “responding to someone saying ‘if people (“just”) do X, then Z” really “spontaneous”? Like, presumably the person saying something like that at least

Well, is “responding to someone saying ‘if people (“just”) do X, then Z” really “spontaneous”? Like, presumably the person saying something like that at least thinks that the people listening would prefer Z to be the case. If they are right, then, if marginal increases in the doing of X results in marginal increases of Z, and the people listening want Z, then saying “the more you X, the more Z” seems like a sometimes reasonably effective way to cause more Z by causing people to do more X. You can call that “an incentive” if you want - that wouldn’t be incorrect - though I think that word often has connotations of “artificial external incentive”, and I don’t think that’s always so necessary.