Additionally, just because you have o-o-b verification, that still doesn't mean that it is e2ee. Until you can view the source and build it yourself, who knows

Additionally, just because you have o-o-b verification, that still doesn't mean that it is e2ee. Until you can view the source and build it yourself, who knows what back doors could exist. But this is the challenge, how do you balance security and convenience? People, by and large, aren't building source and side loading. They are going to have to take a leap and trust someone. It is a very hard problem to solve. Generally, no one cares until the one bad thing happens, then they care immensely. I've said that it is hard to get people to care about privacy when they live stream and share pictures of their life every 30 minutes already.