no one knows if is really good o hold a coin for long term since we are not sure what will happen to crypto in the next more years. in day trade you can earn daily basis even in short trade you have a chance to multiply your capital.
You forgot to mention that day trafe isn't a bed of roses and a lot of things can go wrong when day trading. You didn't even make that one would accumulate fees with more trades. Or the fact that, You might not even make profits. This is trading, a lot of things can go wrong Whether it's day trading, swing trading or long term. I don't like when people sugarcoat stuffs. Anybody who read your post would think It's that "easy" to multiply one's capital with day trading.
I will agree, because day trading is not that simple. Maybe for people who pick long term investment is who not really good at day trading. It is not buy and sell but need much effort to do daytrading, and i believe not all people can do it easily.