Earlier quoted context omitted.
Yeah, the meaning has shifted. It used to be that if people knew you were trolling, you weren't a good troll. Now a troll is just an asshole on the internet.
Some of the newbies don't understand that "troll" refers to "trolling" as in "fishing troller": evoking the metaphor of casting a net to collect responses like fish. They imagine "troll" as a metaphor invoking the humanoid creature from Scandinavian folklore, which, in the Three Billy Goats Gruff story, is a nasty, unpleasant, violent creature who wants to eat everyone who crosses his bridge: https://en.wikipedia.org…
The ultimate troll is a well-timed and placed piece of copypasta, which at ctrl-c ctrl-v is impossible to beat.