I can see how apps have been designed to promote that kind of behavior, but how did they end up getting us to demand it from each other? I missed the memo.
I've decided that if failing to obsessively check your phone and taking longer than a few minutes to respond to texts, social media posts, and status updates is "rude" and "socially unacceptable" then I'm fine with being outright obnoxious, but I know people who feel that doing that would cost them relationships and status and it looks like they're probably right.
I don't remember any massive campaign to convince people that imposing that standard on others is fine, but maybe we need one to let people know that they're allowed to put their phone down for a few hours and set sane boundaries with their friends and employers.