Or maybe he is talking about 1x. Some people do not know that it is still leverage. Even if you have $200 and trade with $100, that is 0.5x leverage. There must be leverage in future trading.
If he is saying people should use 1x or lower than 1x. I think it is good.
The smaller the leverage we set, the more relaxed we are in trading if it is very high if the situation turns around, the risk of loss is quite high, especially if we play 2 types of coins to trade. I myself have only dared to bet below $100, more than that I have not dared because I still have minimal experience.
As it was said - do it as you see fit.
It's great when you minimize the risks and play it safe. Losses are imminent in trading, the thing is that you need to adapt to what happened and learn.