JPMorgan CEO Jamie Dimon continues to question Bitcoin despite its increasing popularity and value.Dimon emphasizes concerns over Bitcoin's speculative nature, association with illegal activities, and lack of regulatory oversight.Despite his reservations about Bitcoin, Dimon supports blockchain technology and acknowledges JPMorgan's use of it in various ways.Bitcoin's rise in value, reaching milestones like $69,000 and $108,135, contradicts Dimon's criticisms, highlighting its increasing acceptance.