Google just dropped a paper saying they can break the cryptography protecting most crypto wallets with 20x fewer qubits than we thought.

Not today, not next year, but they are working with Coinbase and Ethereum Foundation on a 2029 migration timeline to quantum-resistant security.
The threat is not imminent but the window is shorter than anyone expected.
Projects building post-quantum cryptography just got a much stronger narrative and blockchains that drag their feet on migration are going to have a problem.
Worth reading the actual paper cos the technical details matter here.