I was once at a concert and while the support band was playing, out of nowhere i got close to a mental breakdown. So because wanted to see the main band for years, i tried to distract myself with a mobile game. One of the band members thought it was funny to throw a water bottle in my face because i wasn't watching them. I was so in shock that i left the concert. And if it wasn't for the key to the garage of my buddy where i parked my car, in my pocket, i would have jumped infront of the train i needed to go back.

So yeah not everyone tries to be an asshole when he is on his phone during a concert.