What's really going on is similar to what we saw with radicalization in extremist Islam forums. A large group of young, usually lonely and frustrated men, disconnected socially, often with no hope of financial status advancement, find solace and community in online forums with like people, and then act to self-reinforce some of the community's worse inclinations, blaming their predicament on other types of people, dehumanizing them. The irony with these forums are, some people on those forums are not racist or pedophiles, but edge-lording on purpose, but other people can't discern the difference and are swept up and manipulated by other people who get off on manipulating people.
When I was a teen in the 80s, I nerdy and disconnected from school, but back then, if you used a computer, you were fairly involved in hacking, and a lot of community revolved around constructive activities, so whatever loneliness or ostracism geeks felt, it was often distracted by optimism and excitement over technology.
It seems these days, you have the online community in these forums, but it is mostly consumptive, not constructive, or rather, what is constructive is memes and racist, xenophobic, extremist screeds.
I really worry about what's happening as more and more people are made idle and out of the labor force, rather than seek face to face community activity, will eventually retreat to their online bunkers?