Interesting crock of bull. I guess they should get rid of the park hopper and pools at the resorts while they are at it along with shutting down the restaurants at the resorts so people will be forced to spend all day in the parks since that is when the average guest should be there. I also suppose That every attraction will be open the entire day instead of shutting down early. The idea that the company can't manage 9:00am - 1:00am and still keep everything working is a complete joke. For years, this was the normal everyday hours in the summer. All the attractions were maintained and open from open to close. Yes, the parks closed earlier in the off-season. But, there was also plenty of entertainment in the resorts in the evening. Live music and dinner shows were available at the Contemporary, Polynesian and Ft Wilderness. Over the years the non-park options at night grew. I was never really bothered if the parks closed at 9:00PM. I'd spend my evening enjoying Disney entertainment over at Pleasure Island. It filled that night time need for people who are more inclined to enjoy things at night.
Of course, as they expanded the later hours, they cannibalized a lot of the night time options. Entertainment in the resorts got cut back. Last call in the lounges got earlier and earlier. They stopped investing in PI creating the double whammy of reducing the guests, since they were in the parks, a the same time that they eliminated a lot of the draws from the entertainment side or just allowed them to get stale by no longer refreshing them and cutting them (I. E. the slow painfulness of the nightly NYE show from when it started to when it ended years too late). Now, PI is not even an option.
On property rooms also grew from about 1,000 or so plus campgrounds back in the 70's to over 27K now. Even assuming 80% capacity and 2 people per room, a very conservative number, you have 43K people on property every night. The boom in constructing hotel rooms on property directly added to the pressure of needing to have something for these people to do. That 27K doesn't even include Art of Animation. That probably added another 4K+ rooms to the portfolio. You have added all these rooms on property but nothing to entertain them when the parks close early and charge a premium for the rooms. The parks have to stay open later because WDW created its own built in and trapped audience with the idea of keeping them on-property. If you are going to do that, you have to provide them with entertainment to justify the cost. This is why the parks are open later now. They can get rid of evening EMH all they want but they still have a problem of having nothing to do after 10:00PM if all the parks are closed. I never saw EMH as an entitlement but as a necessary cost of continuing to grow the on-property customer base. What is Disney going to do to keep the people entertained after 9:00 PM and all the parks are closed? Free movies by the pool only goes so far. Why do you think Disney is so desperate to add Avatar to DAK? They need it to stay open later. This isn't the WDW of the 1980's that could roll things up at 9:00PM. The average customer is not a single kind of person. You have over 40K people on property expecting value for their dollars and not everyone of them is a morning person.
PS: Want to cut hours? Open the park later on some days and keep it open later. Let people sleep in and have a nice breakfast. Like I said, not everyone is a morning person.