That isnt true at all. You have to claim the babys first to make them follow you but if mosa and other babys are literally inside the adult mosa and not wandering anymore u cant even claim them without cryoing the mothers which will be really annoying for mutation breeders. Ofc there is mods that autoclaim babys etc but ppl with those mods dont even use more than 10 females for mutation breeding. Official ppl have like 50-100 females and imagine u have 100 pregnant mosas with babys inside the mother and cant claim a single baby and have to cryo and uncryo 100 females every hatch with cryosickness on pvp.