It's basic, well established principles of economics (a science - I thought you respected science). The writer said nothing about being a wonderful person BECAUSE they make a good salary, he explained why certain jobs pay higher salaries, & did not attribute it to "innate goodness" or "God's favor" or anything close to that. Might want to work on that bigotry thing you have going against those whose natural & acquired skills are in short supply & high demand in this country. 

Some are born with special skills and aptitudes and talents, & are able through training, hard work & some luck to rise to high levels in their profession. We don't mock & deride those born with art or musical talent, which must be developed with training, effort & a little luck to reach full potential monetary value. But if you do the same with athletic ability or management ability or some other area that is funded and desired by private industry, somehow you are a bad person who should be hated.