[gigel82]

I bet Facebook gets a lot more value out of tracking you across services and locations than from the actual contents of your messages.

This doesn't address it; if you're willing to go to these lengths, just switch to another platform that encrypts E2E.

[netsharc]

True, if you can get your friend to care enough to install this exotic app, you can also get them to install the WhatsApp alternative of the day...