Re: I'm sympathetic
Yes, that's likely true -- but the issue with trolls, etc., is easy to handle (just don't go to the sites where they are a problem), so my gut tells me that there must be more to this than just that.
It isn't always that easy. Trolls aren't all shouty, racist, stereotypes. Those are easy to avoid. But on many mainstream, moderated forums, there are a selection of people who appear to have a whole lot of time on their hands, who are opinionated, borderline rude, sad-sacks who can't accept any view that differs from their own, regardless of the experience and qualification of other posters. By remaining within the forum guidelines, and often adopting a passive-aggressive method of communication, they shout down alternative views. Often they'll be obsessed about one or two particular issues, even if they actually know little about them.
To more robust individuals with a good view of how the internet works, these people are simply ill informed gob shites, who can only be dealt with by ignoring them. But for the majority of internet users, these people are intimidating bullies. In the UK we've had publicly funded schemes to get more of the elderly online (fuck knows why), but that introduces a lot of the people who fall into the opinionated bully camp due to time on their hands and deteriorating social skills, and introduces many more who fall into the role of "victim of opinionated bullies" because they don't understand that posting on the internet is shouting to the world, not a front room conversation with like minded friends.
I've seen this with my own elderly parents - with time on their hands they read a lot, they read the comments, they want to join in the debate, they join in, but they can't understand the minority of unpleasant, persistent, hectoring responses they then get to posts that really ought to be innocuous. The only solution I can see (when hell freezes over) is to introduce a universal block button, that enables a user to block a particular poster's responses and sub-threads, as well as blocking that poster from seeing comments (and subsequent sub-threads) that are made by the original poster.