Welcome to Idiocracy. Google engineers have thought you are now too stupid to use your device and have had to make the buttons giant big colorful flashy bits so you understand what you are trying to do with it.
Android is now a Fisher-Price toy in comparison to iOS.
You are being too harsh, not everybody is under 40 with perfect vision. My mother tends to struggle with her android phone with all the font sizes to the max and high contrast mode.
With font sizes to the max text often does not fit in its allocated space, and is off screen or chopped off altogether. It's a mess of oversized broken UI widgets, and indeed a struggle to use.