The meaning of "to fish by trailing a lure or baited hook from a moving boat" far predates the internet version of the word "troll". This is correct, metaphorical usage.
Trolling for a reaction. Spreading out some chum, setting the line, seeing who bites.
> Derives from the phrase “trolling for newbies” which in turn comes from mainstream “trolling”, a style of fishing in which one trails bait through a likely spot hoping for a bite.
Now find troll(2).