Re: Not that big of a loss
Yes, I never use my phone for this either. Even when people have their phone unlocked and the bar code on the screen, it often (in my experience) takes several tries to get it to scan, while the paper boarding passes generally scan on the first try. It's just obnoxious.
If I'm in an aisle seat I'll usually wait until the end of the line, or close to it. If I'm in a middle or window I'll board with my group in the hope of not having to make someone else get up to let me by. (I try to never have carry-on luggage that needs to go overhead, because I'll be damned if I'll let the airlines con me into fighting for overhead space. So I don't need to rush on for that.)