The issue here is not the exact value of earnings (which changes with inflation), but the income distribution, which has become massive. To cite the article, i

The issue here is not the exact value of earnings (which changes with inflation), but the income distribution, which has become massive. To cite the article, in the 50s and 60s, CEOs earned on average 20 times the average workers' salary; this is now 247 times the average workers' salary.