Imo Googles new material design is not impressive. It does however help developers who are not good designers build a cookie cutter app.
I don't think it's as much a design for designers but a design for users. It's a guideline that all apps can follow so that the user doesn't have to relearn every single app and is more likely to know where to find stuff. As far as aesthetics go it's not the greatest yes, but it doesn't have to be. Having a good looking foundation on which to base your app is great. If you really want it can always be innovated. Ther…
They couldn't get buttons right! The one button to rule them all thing was a flop that even their own apps have ditched, the only place I still see it is in myfitnesspal (and it's super annoying). It's surprising you can launch what's supposed to be UI/UX guidelines and get buttons wrong.
It was obviously untested and had no basis in actual UX satisfaction. They had an unproven theory at what a good UX would be and presented it as fact. I think because of that, the Material guidelines should be regarded as irrelevant. They were at best a designer's bad guess at what a good UX is.
In my opinion, there's loads of other components in there that are bad, for example the side menu, the experience of all material apps on desktops, it's a bad UX.
I don't think you should follow their guidelines.