It doesn't matter at all in the grand scheme of things, but this is something I've noticed more and more, recently.
It just seems a bit like not seeing a child as their own person, and an extension or copy of yourself. I'm not normally as precious about such things but for some reason this one irritates me.
Lil man, bub or lil princess are just as grating, but not in the same way IYSWIM.