I'd add that material UI is one of the worst things to come out of Google, and their implementation in GCP, Gmail etc. I absolutely hate it, and it looks cheap. Even Windows 10 interface looks better.

Even though Material UI is functional, there is something off about it. Something is weird about it, and I can't tell what. Maybe there's a word for it. It feels/looks cheap, like designed for the lowest common denominator device. Like... at least add a backdrop filter/blur to it, it gives a different feeling. The current flat design feels dead and soul less.

The only place where material UI is suitable is Google search. Not Gmail, not GCP and DEFINATELY NOT on stock android.