Cardano founder Charles Hoskinson publicly criticized Ripple's executive chairman Chris Larsen over comments Larsen made regarding Bitcoin's environmental impact and calls for changes to its consensus model. Larsen has advocated for Bitcoin to shift away from energy-intensive proof-of-work (PoW) mining, proposing a less resource-heavy model. Hoskinson, however, sees this as an attempt to undermine Bitcoin's foundational principles and questions the motivations behind Larsen's stance. This disagreement highlights ongoing debates within the crypto industry over sustainability, decentralization, and innovation, with key leaders taking contrasting positions on how blockchain networks should balance environmental concerns with security and decentralization.