Perhaps our expactation of privacy should depend on what platform we use, no e2e on public platforms (i.e. Facebook) but e2e on other platforms where an usernam

Perhaps our expactation of privacy should depend on what platform we use, no e2e on public platforms (i.e. Facebook) but e2e on other platforms where an username/id/phonenumber is required, that can not be found easily. I think the main problem is users mainly using only one platform for their communication instead of choosing it on a case by case basis.