Parental education in this country is very uneven; so is digital illiteracy among parents.  
The needs for parent education -- digital or otherwise -- depend on the given community.  
I don't know how old you are, but your referencing the Reader's Guide indicates to me that you are closer in age to me (70 in a couple of months) than to the age of parents of young children.  I daresay that most are much more digitally literate than you.  
From my perspective, much of the problem lies in our society's refusal to provide adequate supports for parents