Agreed
Monero is not “The king of anonymity” in generell
For people that don’t self host their own Monero node and therefore need to hand their view keys over to a third party node, which would be true for 99.99% of Signal users, the privacy of Monero is far behind the privacy of Cashu.
Zcash has too long confirmation times for day to day payments (like Monero and Bitcoin too)