I make content and have a following that's ~1/10th the size of what he claims to have in this 2020 post, and I have had, within a rounding error, zero percent of the crazy encounters he had. YMMV. If I were a political influencer or a self-help guru, yes probably that would be different, but audience selection effects are a real factor here.
This article always strikes me as insane because he -- a famous person with a history of serious mental illness and suicidal thoughts which he's discussed publicly -- has a moderately bad encounter with a person on the internet and decide that he now needs to purchase a firearm and carry it with him in public.
The topic/area definitely matters a lot. Certainly politics is a big one that generates a lot of strong opinions and emotions. Some things in open source (see systemd--at least at one time) do as well but the blast radius is probably a lot smaller even for people who are regular speakers and writers in certain tech circles.
As was mentioned in another comment, there have almost certainly been more cases where women have had serious/scary issues than men.
This article always strikes me as insane because he -- a famous person with a history of serious mental illness and suicidal thoughts which he's discussed publicly -- has a moderately bad encounter with a person on the internet and decide that he now needs to purchase a firearm and carry it with him in public.