I agree with this.While personally I have always and still am against daily trading because I consider it the same as gambling,something in which you have no control over,in gambling you have no control over the slot machines you play and in trading you have no control on external market factors doing the same as those slot machines,making you lose money in the long run.
Day trading is not like gambling, there is a difference, because in gambling you can only rely on your luck, and trading requires knowledge and skills, experience and discipline will be decisive in this matter. But day trading is very difficult, trading is not easy at all, but day trading is even more difficult.
What I love and call a profitable business usually is to hold the coins,or mine and hold the coins during time exactly like ours,a deep crypto winter and sell in the next bull run,it take patience to do this but it is I think a guaranteed trade that will make you profit in the long run.
Mining can probably be called a business, because you buy equipment, invest with the hope of making a profit in order to return your investment and earn income. This is also not a very easy task, which requires certain knowledge and the ability to find a good place and cheap electricity, so yes, this is a real business.
And buying coins for the long term is already an investment, you just buy and wait for the price of your coins to rise, this is probably the easiest way out of the above, but it also requires a lot of patience and understanding of the market in order to know when to buy and when to sell.