Respectfully, you also said that "we now know" that taking the COVID19 vaccine could have killed you earlier today, which is completely false. I don't think you are getting your news from reliable sources, and I see this comment as further evidence of that. I'm sure there's lots of information on 4chan about the identity of mass shooters, and that some of it is accurate, but most of it is probably wild speculation, outright trolling, and mistaken identity. Like when Reddit pinned the Boston Marathon bombings on a series of innocent people who were standing on a rooftop or missing because they had killed themselves.
Then again, you also openly expressed an antisemitic conspiracy theory (https://news.ycombinator.com/item?id=46959252) along with a lot of racist Great Replacement stuff (https://news.ycombinator.com/item?id=46922014), so maybe unreliable news sources are the least of it. Seems like you're probably a literal White Nationalist.
To be honest, my working heuristic for over a decade now has been to assume that if someone openly admits to reading 4chan without any hesitation, caveats, or embarrassment, they can quite likely be lumped in with a general basket of deplorables.
Is it totally fair? No. Is it reasonably high probability? IMO, yes. Is there likely information value on 4chan that could be difficult to find elsewhere? Probably. Is it worth my time and aggravation to sort through it? No.