> But if someone else gets value out of it and thinks it’s a fair trade, that’s between them and the app creator.
Since we're apparently now doing Freshman Civics:
There are many sorts of transactions that someone would get value from and think are a fair trade, but are prohibited for one reason or another.
Even for those somewhat-antisocial transactions that aren't prohibited, there's no rule that says that you can't complain about how those transactions could be more pro-social.