Is it true? Even on a small scale, when I taught kids how to swim for $20k/year I believe I did more for society than when I built systems to help a large streaming service deliver ads for $100k/year. There are certainly exceptions, but in general money comes from extracting value from others, while jobs that provide to society are not extractive and this pay less.

This is fundamentally wrong. If Elon created Tesla and made ~$100B of wealth from it, he also made all the other shareholders richer by way more. Not only that - the world now has Teslas it otherwise wouldn't. Everyone wins and there is no extraction of values (old Marxist jargon that needs to go away).