EDIT: Repeat after me: net worth increases are not income. Net worth increases are not income. I mean, I "made" $250k last year in home appreciation, but that's just fake money. If they taxed me on it, it would come out of my much smaller take home pay.
This is the big lie. Most of these asset prices are increased due to inflation anyway. In real terms, both the stock market and real estate have been stagnant for decades, but by inflating the currency, they can make people out to have 'increasing net worth' and then tax them.