Stablecoins are banks. What you’re describing has been the foundation of the banking system since medieval times.
I think it would be wholly better, in democracies, if we changed laws we didn’t like than tried to create technology to evade them.
The main proponent that dictates the regulations, the FATF, is a shady, unregulated body that is used for political and economical repression.
Not all blockchains are decentralized, it depends on the consensus mechanism
Almost all the crypto I have is from p2p or freelancing. Very few could connect my identity and my wallets.