This. Some people do it out of generosity, but for some it's a special subset of passive-aggression, a way to say you're wrong and I'm better, but indirectly a

This. Some people do it out of generosity, but for some it's a special subset of passive-aggression, a way to say you're wrong and I'm better, but indirectly and deniably. I'm pretty sure I do it for both reasons at different times and in different cases.