I don't get it.
Their examples are about usability.
So expressive = make things usable?
One of design's main tenets is to make things usable. That's a given.
Also how many users did they test with? And they should caveat what apps this might be suitable for.
This post just feels like more design wankery, using ambiguous words to restate design's core tenets that have been established decades ago.
They could have easily started the post with 'Hey, we made some updates to make Material design more usable and this is how we're doing it.'
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