IDK, I eventually came around to agreeing with the late Dave Graeber; trolling as a communication technique is more or less inherently reactionary. So I stopped doing it.
Shitposting tho? Man shitposting is how you re-up in a world trying very hard to make you quit.
One is ABOUT someone, and the other is typically about our shared experience. I will defend the shitposters; your favorite troll however may one day become someone you're embarrassed you used to know. That has been my experience
a good shit post is a piece of art. At the best a good troll is mean