The "social protocol" expects that if all adults in the household are working then childcare services are a must-have; but as lifestyles and services are disrupted for Covid-related resons, this is becoming unworkable for a large number of families.
Do you get hostile and reject people helping you with flat tire, when you're lost, chasing down you escaped dog?
Do you jump to the conclusion that the offer is indictment of you're parenting?
If you were at the park playing fetch with your dog, you'd probably be annoyed if someone started giving you unsolicited judgmental advice about dog grooming.
Sarcasm aside, I think the main difference between pair programming and OP's scenario is that usually it's unsolicited advice that is unwelcome. Pair programming is usually consensual.