GPs point, I think, is where are these supposed small/medium tech companies with such dedication and success in maintaining quality? This seems like a pretty universal problem across all tech, not anything specific to "big" tech. I'm not sure where you're finding these supposed "high quality" startup products; their offerings are almost universally even worse IME.
Moreover, the personal jab at the end is quite confusing. You might disagree with GPs point, but the "caliber" of their comment seems quite decent, and certainly far higher than your own.
As for the generations, may I have the honour of knowing your age, my friend?
A company with 100k employees will ship crap just by default. And Google is a shining example of that.