I totally agree with everything in that video!
The situation presented at :26 is one of the worst for me. If there's a big group of people on their phones, it makes me not really want to chat because I feel like I'm not important enough, and they'd rather be with whoever they're speaking to on their phones. Ironically, though, if they were with their phone conversational partner, they'd probably be texting me!
My girlfriend is a big Facebook/selfie/photo person, and I don't care for it. Not every little caveat of life needs to be documented, but that's just me and I'm starting to be in the minority, I think, haha.
In the video, the part where they're at the lookout is a perfect time to get off the phone and just enjoy the view.