Jamie Dimon is just another hater. He is a banker, so it's normal to see him spreading negative comments of Bitcoin. Warren Buffet is another hater that belongs to the old generation. These "dinosaurs" will eventually become history, as the new generation embraces digital payments for their own benefit.
Like or not, crypto is the future of money. Bankers, the elite, and governments are afraid of Bitcoin because it provides people the ability to become their own bank (true financial freedom, and sovereignity). Since it's decentralized, no one can control/manipulate it to his/her own will. That's the main reason why Bitcoin has its enemies.
Ultimately, BTC will continue to grow until it beats Fiat currencies for good. Some countries went as far as adopting it as legal tender, so either you join the revolution or get left behind in the dust. What will be closing down is not Bitcoin, but the US Dollar once inflation spirals out of control. A devalued USD would be completely worthless. Bad for Jamie, but good for Bitcoin overall. Just my opinion