That's ridiculous, you think when we were tribes in the jungle mother's didn't have something to do? Gather berries or cook etc? Even 50 years ago it wasn't phones, it was probably household chores that mother's "chose" over playing with their kids.

I really think people who want to feel guilty always find a reason to. Yes, don't avoid your kids over your phone, pay attention to them if they ask and need it, but you can still do other things (including looking at your phone) when around them.