There's a difference between "software developers" and "FAANG software developer" though, which is a source of great cognitive dissonance when people see that industry averages are only slightly above $100k/year but FAANG compensation is like 3-4 times that for basic engineering work.

Both are paid a premium, but FAANG is paid a massive premium, and there isn't much precedent for collecting that massive premium continuously for 30 years.

EDIT: Actually in that spreadsheet I would argue that the $250K compensation is too low, the 10% return on investment is too high, and the 30 year timeframe is not sustainable.