This blog appears to be the work of a career no-coiner who has a book to sell you - I would be a bit skeptical.
If you're rich, like Bill Gates, and say crypto is a bad idea, then you're just an old codger holding on to what power you have before the future leaves you in the dust.
If you're not rich, then you're a salty no-coiner who didn't get in on the train early and is now just having fun being poor.