I’m not sure the number of persons at home has to imply the number of accounts.
We are 5.
Kid would share an account. Parents another. I wish, based on the auth, that the interface would change.
An admin account for all access, including maintenance.
And maybe a guest account so that when I have family at home, they can set things in an obvious way.
And maybe some other 5 members family will like a one account setup.