This is not a well written arricle. They mixes up material design with corporate memphis, which is not necessarily related, they can exist independently.
Their actual problem with google's ux appears only in this paragraph:
The problem? Google’s actual UI & UX design is terrible. Whether mass-market or enterprise, web or mobile, its interfaces are chaotic and confusing. Every time I use Google Drive or the G Suite admin console, I feel lost. Neither experience nor intuition helps—I feel like an old man seeing a computer for the first time. I used Android for years (stock Android on a Nexus device), yet even after all that time, I struggled to distinguish buttons from plain text.
No examples, no reasoning, no good counter examples how it should be done, nothing. I'm not super familiar with google's web ux as I only use search and youtube ocasionally. They write here about android, but no android screenshots in the article. So is this about web ux only? Or anything google? The author couldn't even figure out what is their problem, this article sounds like "old man yells at cloud"