Investing short-term means exposing yourself to more risk, because you will never achieve success from this investment and never reach your goals. Even if you buy a little bit of Bitcoin, if the investment is for a long time, the portfolio will be much bigger. An Austrian Bitcoiner says that investing in Bitcoin for a long time i.e. 10 years using the DCA method will change your life i.e. Bitcoin will change your life.
Although there are traders who are actually successful in trading short-term with or without leverage, it's not for PLEBS like US. I discourage fellow plebs from "trading", but if you truly believe that you could profit as a day-trader, then to measure your success rate, make a pretend purchase in Bitcoin with 100% of your trading capital. Check if you outperformed Bitcoin every year. Because if you didn't, then you merely wasted your time and probably shortened your life-span from the mental stress and loss of sleep.
The human mind is wired to be curious, so the moment you mentioned that there are traders who are actually successful trading short term, there are people here whose curiosity would have been aroused and they will start searching for the answers of how those supposed successful traders did it. You know where such search will lead them to and what the outcome would be and I need not tell you that they will abandon this idea of
buy the dip and HODL to start experimenting with trading until they are frustrated and possible leave Bitcoin or realize that long term is the real way to peace of mind and safety of their investment. This is the reason I try to block any trading idea from sitting well in my heart to avoid this temptation and it is good we use every opportunity we have to encourage people to think long term.