Still sounds like you are trying to convince people that its not needed. I have found that people who spend more energy on explaining why they think something is the way it is ends up being more about them wanting to convince others of an opinion, than stating outright, short and sweet, why you aren't going to implement something. Personally I don't think its necessary to have a big education course one what E2EE is, there is plenty o material on the subject that can be pointed to.
People DEFINITELY don't know what e2ee means, and it's wildly abused as a buzzword. Explaining what it is and what complementary requirements are necessary is just universally positive, no matter where in the privacy debate you sit.
My 2 cents.