I want to preface this by saying I don't have kids.
However, part of me is feeling on the side of the parents here. That is...What is the PR going to be like when Disney tells a family that they can't go into the parks because the stroller that they decided to bring on their vacation isn't allowed in the parks? Is Disney going to sell their own strollers? What happens if all of the strollers are rented for the day?
I can't necessarily figure out the length of that stroller in my head, but what happens if a family with 2 or 3 young little kids can't bring in their stroller because it's to large for the parks? Do they need to have 3 separate strollers for 2 adults to push around?
As the Disney fan without kids...Anything to limit being ran over by people not caring about others around them is a good thing. However, I will feel for the parents that spent thousands to have a nice vacation with their young kids just to be turned away at the entrance of the parks due to the size of their strollers.