Not the patent but... incredibly environmentally destructive by design. Utterly privacy violating as you're publishing every transaction you make for the world to see on a public ledger so now your neighbour (and government) get to know about your badger fetish. Non reversible transactions are an invitation to fraud and theft and make routine errors like overpayments and payments to the wrong address potentially disastrous. Not to mention the "problems" it claims to fix like instant, fee free transactions and easy international transfers have been fixed for many years in countries with modern banking systems (i.e. not the USA) Etc. Etc. Etc.