Yes. that's what I meant. Love and affection is as vital to newborns as food. That sense of love, security, that they're needs will be met, and they will be protected, allows their bodies to devote their resources to growing up healthy. They are not physically ready to handle the stress of survival. The burden is too big and takes a toll on them.
But like I said, they're a lot like human babies. They're born needy and helpless, then they hit the toddler stage and they'll be too busy for you.
The only difference is with kittens it happens in a matter of a few months instead of years.