Well, I actually said bad parenting, which is a lot different.
I think a lack of basic skills shows that something is wrong, somewhere.
Again, it could be due to lack of money, lack of motivation, depression, addiction, poor housing, physical illness, and many other reasons, which I'm well aware of, and not in denial about, having faced some of those myself.
Or, conversely, an ex of mine didn't teach his child to use cutlery because he said it was a social construct, which served no real purpose in order to eat nourishing food.