The economy is largely out of control of politics. You can certainly screw it up in short order, but any big promises will take a decade or more to matter. Meantime, effects like novel technologies and wars and market fads will swamp any effects you're having.
For that matter, the US government has a massive thumb on the side of inaction. Even if your ideas are good and much-beloved, it's incredibly hard to get it past the House *and* the Senate *and* the President *and* the Supreme Court.
The disaffected are currently experiencing yet another round of regret, one of those relatively-rare cases where a massive screw-up is showing up in their bottom line on the scale of months rather than years. It's happening because they've just implemented it despite the checks and balances, probably illegally.
If he understood this, he would not have had to write at such enormous length. The word count is the tell that the argument is based upon false premises. He has mistaken the jockey for the tiger.