I recently hosted a bridal shower for my niece. The bride's mother not only knitted during the shower but told her knitting friends to bring their knitting as well. These women knitted when there was time during the event. The same person attended my grandchild's school musical, where she knitted! I am upset by this, but I haven't said anything. I know I am a dinosaur, but is this accepted behavior?
Across the ages, people (mainly women) have been multitasking by using some of their energy during social occasions to knit or do needlework. Realizing this might help you rein in your reaction.
If something bothers you, you should tell that person rather than sit in judgment as you seethe.
You could say, "You know, it bothers me when you knit during events because I can't tell if you are paying attention." That person might reassure you that she is able to take in everything as she knits. Or she might brand you as being a "knit-picker."