De-skilling?
Hardly.
When I was born 50 years ago, if my mother was unsure what to do about (say) a rash, she could look at the huge grey Reader’s Digest Family Medical. She could as my Dad. Her neighbour. Phone one of her sisters, or friends. Or the out of hours emergency doctor.
There was no more “innate human autonomy” (and I think you mean learned by necessity anyway, not innate) then than now. The mothers that rushed to phone a sister are the same ones that grab their phone now. Both sensible things to do.
If you leave aside medical emergency and include all aspects of parenting - like that old favourite, my child won’t sleep - then I think that the information online now is quite the opposite of de-skilling.
In my mum’s day, there’d be one prevailing opinion in the social group - given there was little cultural variation. There might be another opinion in a book.
Now, using the Internet, a parent has to use much more skills of research, and much more skills of knowing how to - technical term - wade through crap.
When my child is learning about research at primary school, they talk FAR more about how to be critical and the important of checking sources than we ever did at my primary - where we just accepted if you read it in the Encyclopaedia Brittanica, it was fact.
Now a parent might go on line and get 6 different opinions on how to teach their child to sleep. The have to sift through those, think about how they might work for them. Feel bewildered.
That’s an increased level of decision making that is a greater skill than “just leaving baby to CIO because that’s what my older sister said works”.
Different sets of resources, different skills - maybe.
De-skilling? No.
I’m with @JacquesHammer though 