The reddit api blocking 3rd party apps pushed a whole bunch of people onto lemmy, and lemmy is very big on FOSS and Linux so it’s been a gateway of sorts

Presumably they maintain full access because they control both ends. The encrypted part would stop others intercepting messages. At least that’s how I’ve always read it

Edit: I’m wrong, end to end does exclude even the app provider from seeing messages. So yeah, either not enabled or they lied