Do you mean that Google and Apple could revoke e2ee at any time? And/or, that their implementation of it might be include a backdoor for them?
Google is marginally better, as AOSP exists, but once you deal with an actual Android phone, everything is locked down and Google services have total control.
e2ee only exists if you can verify their isn't a third end.
You might say well I am not on their list to target. That could change at any time if you speak up and start becoming a problem. They did it to Tucker Carlson.
"They" did what? Are you referring to the texts with other hosts that were exposed in the dominion lawsuit?
He's been repeatedly caught lying through his teeth and he's on record admitting that he lies if he's "cornered or something." but that he tries to never lie on TV, but of course that was before we got all that evidence of the lies he spewed for ages on TV too, so I guess he was "cornered" when he said that. The man lies for a living. You may want to adjust your understanding of "honest".
That the encryption on Signal has been cracked and/or the corporation has been compromised is a bold claim and I am going to need more than someones uncle on facebook saying it is true to believe it.
“When you eliminate the impossible, whatever remains, however improbable, must be the truth.”
So, the parent is probably suggesting that without root access, and thus full control over the device, the promise of end-to-end encryption is somewhat of a "fantasy" because the user can't guarantee that the device itself isn't compromising the encryption in some way.