I don't see the fine line you seem to be drawing where you assume the camera woman is some altruistic do-gooder on a crusade to save us all from the evil hoarders.

Your entire argument is, "the hoarder's selfishness is inferior to the rest of our selfishness."
TP and paper towels are not essential goods. No one is being harmed by the hoarder collecting up paper goods.

If hoarder lady had bought every mask in the department store, I'd have a different song to sing... but I'm not sure I'd be singing it at the poor lady in the parking lot.
All the hoarder did was a perfectly legal consumer transaction. If the store doesn't want to ration sales, then maybe point that camera at the store's manager instead of the poor woman in the parking lot.