i don't think it's any more ethically wrong than like buying a chocolate bar, coffee, clothes etc that has probably been made with terrible labour conditions and exploitation, i think it comes down to the whole 'no ethical consumption under capitalism' thing again. the amount of money we are gonna be 'investing' isn't gonna be moving markets or make any material difference to anything other than our own bank accounts. we have no choice for now but to survive and attempt to maximize our happiness under capitalism so we may as well use whatever tools are available to do so, as long as we don't exploit others.

the rich are able to create money out of thin air while we are forced to sell our labour, now the barriers to entry to the stock market have been removed with apps etc the riff raff have been let into the casino, and if you can effectively make a little something for yourself i don't see how it's a problem, as long as it doesn't influence your ideology to start thinking 'wtf i love capitalism now'

i have made a bit of money investing in the stock market but it doesn't mean i don't simultaneously think the stock market is complete bullshit and should be abolished entirely