Peter ( @Peter Todd ) was 1st on this from what I remember. From around the days of "cypherpunk desert bus" [1]

It explains why we L2. It explains why the otherwise idiotic "build privacy on top of transparency" is not, in fact, idiotic.

https://xcancel.com/peterktodd/status/2062809959138488502#m

[1] He participated in the original zcash trusted setup and blogged about it here: https://petertodd.org/2016/cypherpunk-desert-bus-zcash-trusted-setup-ceremony