poll: has a "callout" post on social media from a stranger (e.g. a post dunking on some kind of hypocrisy that you engage in) ever motivated you to be a better person in any way?
Kinda, yeah. If people get consistently called on their hypocrisy that's part of the social context, and putting together a good argument in public for why This Is Not OK removes plausible deniability and gives others who are already on side tools for promoting good behaviour.