By all means he deserves more money, no problem. But why with a lower tax rate?
Labor produces guaranteed income atleast in the west.
But investing capital doesn't.
How else do you incentivize risk taking?
Low tax rate can be seen as a discount from society.
So, how else do we incentivize him if not by lower tax rate?
And if we don't, he will just take a lazy job and continue earning his paycheck.
You are talking as if capital gains don't increase efficiency the company, help produce more goods and services for the people or create/eliminate useless jobs via automation. He only gets to keep money for the value he creates for the society. Society gets to keep the value.
Now he might be corrupt or using loopholes, but that's smth we need to fix.