My suspicion is that this is caused by both the marketing that crypto has done, and the wide ranging perception that the official mechanisms for investment and wealth growth are rigged against most Americans.
I see the second part routinely pushed by crypto believers.
I also see it a lot outside of crypto. Heck, it’s starting to show up in surveys about “the American dream”, lots of people now think the system is rigged.
That perception is generally correct. Even having switched to tech from another field I took seriously...it's still luck that I was able to do so to a significant degree.