Personally, if I were Micheal I won't have taken Jamie's words to heart because it actually doesn't count. People have their different opinions about Bitcoin and from the onset, Jamie has had a strong one against it but it's funny he gives financial advice to wealthy clients to include cryptocurrencies in their portfolio. The same Jamie Dimon in 2021 said
Bitcoin is worthless , but from what I see, he'd accept anything that makes him richer.
For me, he's just trying to make himself popular by bad mouthing Bitcoin but that won't change anything.