instead of stimulating the economy, they’ll just speculate with the cash

That is also stimulation of the economy, although a terrible way of doing it and (at least in my opinion) leads to a worse situation even if economic activity increases. Bad money injection, causing misallocation of funds, is always worse than just doing nothing for the vast majority of people. Asset speculation drives risky capital ventures that try to find a way to monetize and squeeze more profit out of literally everything.

Throwing money at artists is… meh. I’d rather see it put to something more useful. Teachers, more staff at kindergardens, better healthcare…