Ain't the the truth, especially in this context?
I got a facebook account mainly to see what my millennial daughters were posting and see pictures of the grandchildren.
I posted very little, maybe a couple of times per month. Since I accepted friend requests from almost anyone I knew, it wasn't long before I had close to 300 friends.
Before long, I would sign in to see pictures of the grand kids and instead start getting left-wing screeds from people I thought knew better and were raised better.
So I started posting a few articles of my own from top sites like this, American Thinker and Townhall.
It wasn't long before the snowflakes started unfriending me. They could post their cultural Marxist pablum to their heart's content, but went ballistic when I just let another view be disclosed.
Actually, a "Troll" is a bit more sophisticated than that. What you're talking about is just a straight up "hypocrite."
A Troll is on a mission, that is to engage political opponents and undermine or corrode their confidence to the point they become ineffective. To that end, they will "listen" to you, but discount, demean, ignore, or undermine ANYTHING you have to say, no matter how reasonable and logical, that undermines with the narrative they are trying to promote.
I've encountered similar phenomena. Leftists are not just bothered by hearing differing opinions, it bothers them to be aware of the existence of other viewpoints.
Possibly because they know they can't use logic and reasoning to refute other opinions. The most they can do is to try to silence other opinions.