He's set up a community primed to think the scientific establishment's focus on falsifiablility and peer review is fundamentally worse than "Bayesian" methods, and that you don't need credentials or even conventional education or experience to have revolutionary good ideas, and strengthened the already existing myth of lone genii pushing science forward (as opposed to systematic progress). Attracting cranks was an inevitable outcome. In fact, Eliezer occasionally praises cranks when he isn't able to grasp their sheer crankiness (for instance, GeneSmith's ideas are total nonsense for anyone with more familiarity with genetics than skimming relevant-sounding scientific publications and garbage pop-sci journalism, but Eliezer commented favorably). The only thing that has changed is ChatGPT and it's clones glazing cranks first making them even more deluded. And of course, someone (cough Eliezer) was hyping up ChatGPT as far back as GPT-2, so it's only to be expected that cranks would think LLMs were capable of providing legitimate useful feedback.
Not a fan of yud but getting daily emails from delulus would drive me to wish for the basilisk
He's deliberately cultivated an audience willing to hear cranks out, so this is exactly what he deserves.