The question isn't whether I'm representative of most individuals with GEDs, but whether I'm representative of individuals holding GEDs who happen to have pursued careers involving substantial software development duties.
I assumed that was implied. My mistake. To clarify, I don't think you're representative of individuals with GEDs who have pursued careers in software development. I will suggest that a random high school student who has just finished his junior year and who wants a career in software would be better served by finishing high school and getting a 4-year C.S. degree (from the highest-ROI university available to him) than he would by getting a GED and spending the next five years doing something else.
Which also supports my point. It means my ~$65k salary in 1999 was potentially lower than it should have been, which strengthens the case that the poster's claim of $80-90k being the norm for Ph.D.'d data scientists in the Bay area is a huge exaggeration.