I concur.
The typical Democrat thinks rich people are like Scrooge McDuck, with a warehouse full of gold coins and a skiploader that the rich person drives around, moving the gold from one side to the other.
They don't realize that wealth is in equity in the businesses they've built, so it sits in a quantum-like state of existing but not existing at the same time. Until their shares are converted to money, they're only potential dollars, not real ones.
And when they do convert them, they either invest them, providing jobs and equity for others, or they spend it, also providing jobs.
So if those unrealized gains are taxed, they can't be used to provide jobs. They can only be taken by government and spent without a fair exchange of value. That hurts everyone; it causes inflation and hobbles the economy, reducing wages and jobs.
That's what's Democrats call 'fairness and equity.'