Relai is non kyc, but has a centralized bank account : your bank knows exactly what you're doing
Discussion
I think I heard CashApp was maybe similar but your bank doesn't know what you're doing with your cash in cash app(?)
If you send to cashtags they def keep a record that Alice sent Bob $100. But yeah if you use it as payment on Robosats they obviously got no idea that money was used to buy BTC.