Why would you simplify the tax code if the whole point of the tax code is to create loopholes so you can pay way less taxes than the public would vote for?

The tax code exists for Welfare Queen Billionaires like Elon Musk.

Well see, you actually missed the catch that by eliminating everything except income tax people like Elon wouldn't have to pay any tax, it's even better for them. He's not getting a W-2, virtually all of his income is actually capital gains or similar.