I think the major threat of short time trading are EMOTIONS.
When you are a short term trader you always get nervous about bad news, especially in the crypto market, which is very volatile.
My experience with short term trading are mixed. I have earned good money, but sometimes destroyed money due to false decisions - driven by short term focus and emotions.
But if you have a plan for every trade, you shouldn’t be letting your emotions dictate your decision making.
Plan your trade, TRADE YOUR PLAN!