I don’t quite get this. To use something like heyanon, or tornado cash, still requires the same amount of user interaction?

Instead of a signature you’re computing a zk proof, but the UX is not fundamentally different

Real World Ethereum 🌎 
building /daimo ✳️ 

2 threads in there:
1) heyanon doing zkp in chrome is game changer from tech pov
2) the diff is in after the interactions have occurred. in one instance you ‘trust’ and pass some info and other you just pass a proof. later is 🔒🛡