I was going to give you a well thought out response, but plenty of others have already raked your ass over the coals by now, so I will give it a pass.Because it frees up more money among workers to spend in the market thus generating more profits and economic activity. For whatever reason there tends to be great concentration of wealth as the winners continue to win, like bezos, musk, or gates, who end up with more than anyone could possibly use or need. That wealth tends to just stay tied up in financial instruments, instead of being used productively. So the economy at large starts to benefit from a wealth tax after there has been sufficient capital formation. Basically, see Capitalism in the 21st century by thomas picketty.
Most proposals for a wealth tax are modest starting at .5% at $500k and peaking at 2.5% at 2.5m. Many working class folks could live completely tax free. For me, I'd end up paying more than I am currently, depending on what my capital gains are, but not by much.