I mean.. km not saying your wrong, but your not entirely right either.

So most norma adults will make a load, maybe a load and a half a week. And a 2 year old (that probably doesnt wear onesies anymkore) would probably be about a load because their running around at that age and like to wipe stuff on their clothes. Will that you have 3-4 loads which will take a out 3.5 hours to do if you catch them as soon as they're dont drying. But since hes a doctor he probably wears multiple outfits a day doubling his and you can easily be doing 6 hours of laundry for a family of three.

So yeah, that's one day. But alot of people will just do a load every couple of days instead of having to designate a day every week to stay home and do laundry. And since they have a housekeeper, I'm doubting they would turn that into the weekly cleaning / laundry day.