Well, trading is not only a long term game. You can also be a mid or short term trader, and have different plans and strategies to earn profits and prevent yourself from excessive losses. We all know that we can't always be in profit, but we can plan our trades based on the form of trading we are doing and focusing a bit on the risk management.

If you refer that learning and practice must need enough days then I agree that to be successful in crypto trading that we need to remain patient for longer period of time; this way it can be referred as a long-term game but actual trading process can be short-term like scalping.