This is a great article. Note it's from January 5th, and it's extremely speculative. But certainly at least worth adding to the overall amount of signals that stock investors are thinking. I think I remember someone saying that in 1929 when the shoeshine boys were giving stock advice that that's how someone knew the bubble was about to burst. Lately I've been discussing investment strategies with the people that work…
The 2021 signal is all the high school students telling you what altcoins to buy. And just wait till you see what is going on with Decentralised Finance. https://coinmarketcap.com/yield-farming/ Sort that by Highest APYs. It fluctuates all the time but the numbers are getting as high as 1,000,000% APY. There is no world in which that can be anything but a Ponzi scheme. People are actually buying into these things.
The MMM Global ponzi scheme has been operating in the open for about a decade: https://en.wikipedia.org/wiki/MMM_Global
Ponzi schemes benefit greatly from a public perception that "all markets are rigged". Ponzi schemes can feel like a rigged game where they have a chance to get in on the ground floor of a rigged game. They also benefit from false equivalencies such as "after all, nothing good lasts forever" to make ponzi schemes feel like just another bull market opportunity that won't last forever.
It's akin to gambling. Many entrants tell themselves they'll only allocate as much money as they have to lose, or that they'll withdraw their initial investment after the first 100% gain. Sadly, they usually get overconfident when the scheme doesn't immediately collapse and end up investing far more than they would normally be willing to risk.