I don't like 23andme, but don't the shadow profiles sorta implicitly exist whenever you're working with DNA data? If their DNA test can recognise first cousins

I don't like 23andme, but don't the shadow profiles sorta implicitly exist whenever you're working with DNA data? If their DNA test can recognise first cousins, then they've got a recognisable DNA profile for each user's parents, grandparents, children and so on.