It's an awful change that has absolutely nothing to do with improving the park experience for us.
In addition, I fail to understand the self-rightous folks who seem to think that not adhering to the window was breaking the rules. Pre change, the window was a guideline - not a rule - Disney openly stated that they allowed late returns.
Finally, I REALLY fail to understand how anyone could think this is a good idea - it isn't going to mean more FP or shorter lines. It is not changing ride capacity. I've come to the conclusion that those who support the change are probalby those who are more jealous of people who put the work in and were able to really dominate the parks during the busy times. Enforcement levels the playing field for the more relaxed parkgoer.