That's a really sad/heartwarming thing to do, but since he has limited funds, if he budgeted hi money better and bought proper groceries instead of fast food, him and his daughters would be able to eat properly for a few days
You don't need electricity for everything. What about buying a loaf of bread or something? Yeah, it's not very exciting, but you have to work with what you have
@sincere_milkshake in most poor areas McDonald food is considered a luxury. Some don't get to taste it until they're working adults. It's unlikely that he's buying them regularly. It's more likely that he's giving them a treat.
Just because you are poor does not mean you have to give up all forms of joy