E2E encrypted doesn't mean they don't know who is messaging whom. If there is suspicious contact, can they request who contacted a pharmacy? Then they can ask t

E2E encrypted doesn't mean they don't know who is messaging whom. If there is suspicious contact, can they request who contacted a pharmacy? Then they can ask the pharmacy why so-and-so contacted them. A better option would be something like Briar which hides IPs via Tor.