Any talk of privacy on Bitcoin without fundamental changes to L1 is all cope at best or willfully deceit at worst. There have been propositions to add confidential transactions (already proven with liquid to work on the codebase), silent addresses (only work on like 2 wallets), payjoins (not mandatory or default and very janky and slow). All of these optional half measures basically serve to check the box for maxis but ultimately make no change to the protocols privacy.