I must say I haven't read those books ,but I don't agree that children may have wrong messages about man role only from books . where is the role of their fathers or grandfathers or uncles or big brothers or male teachers in their education then?
If a child has a responsible father or any other important male figure in his childhood ,he will got the right message no matter how many books he read about Papa Bear- a bumbling idiot .
I would rather wonder about the fact that those books may reflect or not the reality of our century.