I agree.
I'm staying at the Polynesian in two weeks, and I have not received any notification from Disney about the monorail's limited hours. The only reason I know is because of DIS and AllEars. I feel bad for the guests that don't find out about this until they get there.
I was super upset when I first found out, but then after the initial shock, I realized that this really didn't affect me that much.
We get up and go to the parks around opening - we will have definitely left for our resort by 11:30. Yes, we usually do go back in the afternoons, but it's actually quicker to take the boat there than to be the third stop on the monorail. There aren't that many people headed back to their resorts in the middle of the afternoon... the monorail and water launch lines are usually very short. When the park closes, the monorails should be up and running again.
What I was most worried about is our Chef Mickey's ADR... but that's not until 7:30 PM, so again, the monorail should be running. And then the GF is walking distance, so 1900 Park Fare shouldn't be a problem.
Don't get me wrong - I definitely consider this a setback since you're essentially paying $$$ for the convenience of the monorail. Our second choice was the Wilderness Lodge, which of course has the boat to MK. If the monorail was shut down completely, I'd be peeved and switch to WLR. However, since it is operating on limited hours (the hours we'll most likely be using it, anyway), it's really not that big of a deal for us.