Yes, lower corporate taxes (by far) leads to higher corporate earnings which, in turn, leads to high stock prices and higher C-suite bonuses. But that's not what the sales pitch was for the cut and it certainly doesn't mean it puts money in everyone's pocket since not everyone is invested.
It was sold on economic growth that would "pay for itself, which everyone knew was a lie and it ended up being a lie.
And the tax rates have already begun to increase and by 2025 they will be as high or higher than they were before the Act.
But it's good to know you base so much on stock market performance; you must be pretty happy with Biden.