If the "services" want to watch, don't worry they will, "they don't need your password". But I guess they "do" that only for the very baddies, aka child exploitation, human trafficking, terrorists, killers, drug dealers, etc.
We all know here that "information system security" does not exist, this is a fantasy: there is only some "best effort" with a wide spectrum of compromises. If somebody talks to you about "deliverable security", that guy wants to sell you something.
E2E will protect you only against John Doh, "hacker only on Sundays". And we better keep that in mind.