You obviously have never climbed into bed with the lights on and want to turn them all off without getting back out of bed. Or had the AC way too warm in the middle of the night and want to turn down the temperature.
Seriously, these devices can be a huge help, especially since you can ask for stuff from housekeeping (who can be hard to get a hold of these days), etc.
Likely it is this last point as to why Disney is doing this, as it will reduce demand on their already overtaxed call centers and honestly, I would bet they are trying to hire more people, but like everywhere having a hard time finding people to work. This helps mitigate the issue, potentially freeing people up to work in other areas.
In short, this actually makes sense.