We don't need to, nor are we the ones you should worry about. 

Getalby and Blockstream can. Even if you trust them, they can be coerced to track you by government and you would never know with a gag order.

Privacy is between sender and receiver.
Not sender+reciever+third party. Otherwise it is not different from Paypal, Venmo, or a traditional bank.

Also, FYI, Liquid is traceable, it only hides amounts. Not senders and receivers like Monero.