If that is the stated goal, then they have failed. Completely.

My father, who is a "man of the land", has issues navigating most apps that don't implement a bespoke, application-oriented UI. Most of them use Material UI, and all of them have big controls, huge margins and padding, unnecessary rounded corners, actions hidden in unlabelled menus, stuff that you have to swipe at to navigate (without showing any hint of it), and so much wasted space that the entire screen is occupied by two or three rows of controls. I use some of the same apps and even I feel that the design is hostile.