But Google is a data driven company and they must, surely, have scads of data on this. They must know what their users are trying to do and how they're trying to do it, so why are Google interfaces so hard to use?
But I also have done a lot of tech support for senior citizens, who don't have the innate ability to stumble through bad UI like a lot of us millenial-types do. I feel like Google is talking to the wrong people.
I suspect that if Google UI designers spent some time in senior citizen communities watching people use their email, almost everything about how Google designs web pages would be thrown away.
Do not confuse "Material" with "Anything made by Google".
I like to look at the apps google builds with their own frameworks as a guideline for good examples. Like https://material.angular.io/ using angular material 2. I like it simple, clean, and easy to read.
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.
I have just opened 4 random Google apps on Android (Search, Docs, Plus, Drive) and they all have the floating action button. Which Google apps have ditched it? The FAB makes a lot of sense on small screens like smartphones.
The original design was click the button and a load of small buttons appear.
Keep ditched it completely, Drive has a slide up, I think Clock used to use it, others have disappeared.
They've abandoned the original concept.