Normally there are people whom we call day traders, this day traders earn is to trade and make profit daily which required more knowledge to carry out technical and fundamental analysis, this people are the ones that belong to the buy buy buy and sell sell sell category because of price movement.
And there are also another category of people whom we investors their earns is to buy and hold for long term, nothing like buy buy buy or sell sell sell for them, weather the price is going up or down they are still buying continuously, this are people who are committed to there investment vision. You just need to have little knowledge about crypto to belong to this category, no time to stress yourself to carry out technical and fundamental analysis just stay inform that's all you need.
Not all traders always make a profit every day even though they are good enough at reading market conditions and also have good technical and fundamentals. Because trading is a job that has a pattern of increasing and decreasing at all times so it is always quite difficult to make a profit every day even though if calculated weekly there may still be more profit than loss. That is why some people prefer to be long-term investors because they do not have to face market conditions every day after they buy the amount they can afford at a certain time.
I don't see any reason why someone should say that trading is away of make profit in bitcoin, to me traders get more lost than investors who are buying and holding for a long term, trading is more risky than investing, investing in bitcoin we give you a reasonable profit than trading, there is no way you can compare trading to investing when it come to bitcoin.