To me this is fundamentally contradictory:
> the people en masse, should they choose to actually understand and use the decentralized blockchain
I used to work for financial traders. Our company was essentially the same as the companies of professional gamblers. We knew we were playing zero-sum games. Our goal was to create asymmetries in information and skill such that we got the money that other people were putting in. In the markets we played in, the opposition was mostly other well-funded players. But you can bet that there are well-funded groups with snowdrifts of math PhDs who are happy to take money from "the people en masse" that decide to trade in the markets.
Those people already exist in the non-blockchain financial economy. From predatory lenders to fake health care plans [1] to ponzi schemers, frauds, and grifters. What mainly keeps them in check is regulation, not regular people "choosing to actually understand". Because what distinguishes "the people en masse" from the people who prey on them is that the predators can devote all their time and attention to one particular hustle, while "the people en masse" have to defend against every hustle, while trying to be good at their jobs, take care of their families, and live their lives.
So the hustlers are always going to be one step ahead from regular folk. Doubly so in an unregulated, rapidly evolving space with metastasizing complexity like you see in the cryptocurrency/ico/nft/defi/web3/wft space.
[1] https://www.nytimes.com/2020/01/02/health/christian-health-c...