When successful boomers like him start to buy bitcoin you know mainstream adoption is coming. More & more people are starting to open their eyes to the scam of fiat currencies & normal banking.
Bitcoin is coming!
Meh there has been always people who are very skeptical of the banking system, often these are goldbugs, and this is just one of them. There is no mass adoption, or some wave of adoption by boomers, it's just one guy who isn't hostile towards Bitcoin, because actually many goldbugs don't like Bitcoin, as they think it's a competition to their beloved gold. You can only proclaim that mass adoption is coming when you have the numbers to back that up, not a few small celebrities saying that they bough a bit of Bitcoin on twitter.