Do your friends who have adult sons living with them tend to do more for the sons' housekeeping needs?

It just occurred to me in the past few days that of the friends that I have that have adult sons living with them, all of them do their sons’ laundry for them.

I was doing my own laundry since I was a young teen. My friends with teen daughters don’t do their daughters’ laundry.

Just an informal survey. I know it’s not something I can address with my friends, because people do what they do and what works for them, in their households.