This isn't really about some kind of caricature of functionalism that HN commenters subscribe to. It's clear that many tech companies have been commissioning fonts they don't really need, and those fonts are often very similar.
See this tweet and the responses:
https://twitter.com/kodform/status/996447044100386816?s=19
Digital fonts changed the economics of typeface production. There's a glut of independent typeface designers now, creating fonts that I suppose count as valid self-expression. Far more typefaces are being created than are actually needed. It's as if creating a typeface is like performing music; it was one thing for many performers each to play live to a small audience, it's something totally different when all their recordings are available in the same marketplace. The best performances will obviously get a large share of the market, and recordings that take a lot of resources to produce (like a corporate typeface) will exist in a different category to the homemade ones.
As I see it, most of these corporate typefaces lack authenticity. They're typically not a meaningful part of corporate design strategy. It is a cosmetic activity. The exception is those which cover larger that unusual chunks of Unicode.