The simplest way to break the sole privacy problem Satoshi left in the whitepaper 🫱 nostr:note1zyqqdvrreedrkgmrk8tw0wm4lsjy04wwznms9gq73ums53c7sqjqccf0yu
Discussion
How much of a downgrade do you think this is compared to coinjoin?
Neither up- nor downgrade, just another flavor. Payjoin keeps details of an actual payment private from third parties. Old school equal-amount CoinJoin (including Wasabi 2) keeps earlier history private from a second party, but payments thereafter leak details.
Payjoin is an incremental change to boost the privacy of the whole network, not just for an individual.