Earlier quoted context omitted.
I’ve also learned a lot in my degrees, and greatly enjoyed my time in the university. However, I’ve only ever needed a tiny fraction of what I learned there in my jobs at Google and Facebook.
... what were your degrees? I'm assuming you're a programmer? I only had a BA in comp sci, and almost every CS course I've taken has been useful to some degree. Operating Systems, Data Structures, Programming Languages, even Theory of Computation. Sure most of the day-to-day is people skills and rote programming. Strategically Comp Sci has been very valuable in the long run.
My friends who only have mathematics degrees have jobs where their extensive training in abstract mathematics is mostly (eg insurance and finance jobs, which only use small fraction of what you learn in a math degree), or wholly (lots of them are software engineers) irrelevant.