In this case "I" am posting to "you" (pl.), so, "you folks". Good comment about the airport family; just what I was looking for, pro or con.
In a popular coffee shop across from UNM in Albuquerque that sight is common - students sailing alone, through an archipelago of devices. Hey, in my day you went there to hit on each other! And these are our best and brightest???
I don't know if the texters are conscious of it, but the OP behavior says, 'I don't know who just texted me, but they are more important to me than you, my date for the evening.'
My very first text was to two young women on my crew during the 2010 census. They were kidding me about my geezerness, so I sent "OMG! I'm a texter!" They like to died laughing, they said later. On the pro side, my first couple of phone plans were stingy with talk minutes but generous with text, so my wife and I got used to it. And smart phone is even better - full keyboard and spellchecker.
Seriously, your comment about the father has been noted by many. And we thought using the TV as a babysitter was bad.
Finally, a science link, recent.
https://www.sciencenews.org/blog/growth-curve/toddler-screen-time-speech-delays-lost-sleep