Many of us lived and prospered in the dot com bubble simply by buying stocks that never had any real reason to go up. And many of us had pissed it all away in a year or two during the bust. I personally lost everything I made and it was a lot. But during the 2010 financial crisis I actually did very well playing the bounces in major NYSE and NAS stocks. perhaps the pain from 2000 was enough to smarten me up a bit.
I remember CNBC mocking Buffet about how he didnt understand the new way to value stocks and then CNBC apologizing years later and even running clips of them selves and how off they were.
This foolishness with Tesla etc reminds me very much of the dot com bubble.