“ … a rise in conspiracism comes from a rise in actual conspiracies, and the trauma these engender. “ (Cory Doctorow/Pluralistic)
Qanon is dangerous bullshit, but there are numerous real world examples of powerful pedophiles being sheltered by institutions. Jeffry Epstein and the Catholic Church sex abuse, to name two. And if you broaden the sex abuse to adults, that category includes Harvey Weinstein, Bill Cosby, Hollywood in general, and the Republican party.
Similarly, anti-vax and anti-mask are dangerous bullshit, but the opioid epidemic is an example of big pharma making billions preying on Americans, with the FDA as a willing accomplice.