This whole “little space” thing. Also in cgl the person with the title daddy/mommy takes the role of a caregiver, so is literally a substitute for a parental figure. There’s more. That whole “we sexualize everything that’s got to do with children” aka stuffed animals, pacifiers, childish behaviour, baby talk etc.
There’s a big, BIG difference between cgl and just liking to call your dom daddy/mommy.