Interesting question. Lets’s face it. WDW rides have always been focused on entertainment over education. To say that one goes to WDW for the educational aspects is a stretch. That said, the first time I rode the reboot of Test Track, my reaction was that they took out everything close to educational and replaced it with a sleek look. This stands out most to me in the rooms that used to be for “testing” the effects of heat, cold, and corrosion. There is literally nothing in these rooms today except for sleek blue lighting. And this was not even an IP makeover (though it looks a little Tron-esque). Assuming that education and entertainment were once equal missions of Epcot, it does seem like they are skewing toward the entertainment part.
As for the IP, they do have a much wider pantheon to draw from today than they did when Epcot or even AK opened. You can’t blame Disney for wanting to showcase what they have in their parks. Does it seem a bit haphazard now? Yes, but I haven’t seen the finished product— meaning the whole new realization of Epcot. I thought Pandora in AK was a crazy idea, but they made it work.