> "But extremism has been central to 8chan identity since it was founded in 2013 by a computer programmer and self-proclaimed eugenicist Fredrick Brennan."
Brennan himself is both disabled and has said (I can't recall where so forgive me if I'm wrong) that he was just trolling when talking about eugenics. Article says in the next sentence "(Brennan has since distanced himself from his earlier writings and beliefs and has cut ties with the site.)" but I can't help feeling that the initial mentioning of his discussion about eugenics was unnecessary.
> "Protection from Cloudflare"
This entire section looks to me like the article is blaming Cloudflare for 8chan's existence (and subsequently the El Paso shooting). If the author had that in mind they're making pretty big grasps here. Cloudflare has a reputation for trying to support HTTPS for as many sites as possible and offer protection from DDOSing ((disclaimer: I use their registrar and DNS)). This is mostly just my personal thought rather than an actual argument though.
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I think 8chan is probably the seediest search-engine-indexed site on the web right now. Even members of 4chan's random board, popularized as the shithole of the 'net, disavowed the actions of the El Paso shooter. Cloudflare can choose to tolerate 8chan, and I find that decision to uphold free speech admirable, but 8chan is far worse than the Daily Stormer.