“There’s an argument to be made that everyone who posts on boards like this could be considered a “troll” in the classic sense, because everyone who writes is looking for that response, that spark of emotion in someone else that they may have instigated.”

Yes, but then you hit the classic Yin and Yang of it. If everyone is a troll, what meaning does the word have? Do we start accusing posters of being non-trolls?
Liberals are trying/have tried to ban hate. If they do that they will also ban love, since there cannot be love without hate. No down without an up. Left must have a right or there is no direction. Western society has embraced a ‘cult of personality’. We mostly look at the cover before deciding to buy the book. Those of us that still read.
Those that don’t, watch movies, which in turn are sold by posters or ads featuring square jawed manly men and large silicon bosom long legged peroxide blonds. Sort of a 20th century book cover. It would be a great improvement if humans started looking past the advertising and judging the content.
For one thing it would greatly reduce the number of long legged mac daddies in office.