I’d hesitate to say it’s wasted. Aren’t these some of the most complex, electronic, decentralized systems in human history? That skillset is going to be more and more important the more and more computers there are.
> Aren’t these some of the most complex, electronic, decentralized systems in human history?
There are more phone calls in a day, but orders of magnitude, than Bitcoin transactions. So, no, they aren't even close.
Statements about "I wasted years doing X" are almost always overblown. The more realistic take is "I didn't get the ROI I wanted in specific area X."
Sounds like the author may have "lost their religion" though.