You're absolutely right, it's good stuff! If you're interested in learning more, made an explainer about payjoin that you might enjoy ^-^

https://primal.net/e/nevent1qvzqqqqqqypzqn0hksan5nd5hx0rmwkkh58cggn8ymhavwh8uqnljxktmyd5mwjgqy88wumn8ghj7mn0wvhxcmmv9uq3qamnwvaz7tmwdaehgu3wd4hk6tcpz4mhxue69uhkummnw3ezummcw3ezuer9wchszxnhwden5te0wpuhyctdd9jzuenfv96x5ctx9e3k7mf0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qg4waehxw309aex2mrp0yhxummnw3ezucn89uq3wamnwvaz7tmjv4kxz7fwwpexjmtpdshxuet59uq3jamnwvaz7tmjv4kxz7fwwdhx7un59eek7cmfv9kz7qghwaehxw309aex2mrp0yh8xar0dejhytnrdakj7qpqysn479ddj0yf0gauyxgmxdwsu39l9t6tts5fgvq0gzg0kzlfkj4sfd5mjs