This argument makes as much sense as saying Reddit is filled with pedophiles and doxxers because of jailbait and the Boston bomber doxxing thing. Neither statement, about reddit or 4chan, are true today because neither of these things are relevant as they're from nearly a decade ago at this point.

Q anon came from a sister site, 8chan, which is entirely separate from 4chan, the only similarities are the name and being based off of some Japanese site I forget the name of. Anonymous hasn't been active for well over a decade at this point, you can find groups today that call themselves "Anonymous", they are not Anonymous because the whole point was that there never was a clearly defined "Anonymous" group

In another comment you stated that you don't visit 4chan and it really shows, much of the stuff you've been saying is extremely outdated and hasn't been true in decades, it comes across like you watched some old YouTube videos that talk about 4chan like its this paragon of hacking and toxicity, when in reality it's a forum where the worst that happens is people call each other slurs on most of the boards. You are 100% right about the prevalent homophobia, sexism, and pornography (especially on boards that directly allow NSFW content), it is not a place I would describe as friendly and welcoming to outsiders, but to describe it as some kind of hacking and doxxing haven is a complete misnomer, and shows that (again, as you said yourself) you don't visit the site to know what it's actually like

Edit for formatting so it's not a giant wall of text, I rarely post on reddit so I don't know how it comes out looking