I think “trolls” being referred to here are the Russian spambots.
The front board is littered with them. It’s been that way for a while, and we few regulars who still post almost accept it now as some sort of wallpaper, but it can be a bit jarring for those coming back here for the first time after a hiatus lol.
But in regards to the declining activity of this forum, the format of these kind of sites have given way to the proliferation of social media groups and the huge variety of comments pages. TFS’ heyday was over a decade ago, when such other outlets were less prevalent.
I will agree that, while the internet in general has brought much good, social media has definitely negatively polarized people, proliferated disinformation, and augmented outrage & paranoia.