Trading strategy will always be depend on your style or trip. Because for me trading is just a matter of hobby, where in the end there is an advantage and disadvantage and everyone should know that as well, so in the end they won't blame themselves or others if ever they loss in it. And in my case spot trading is enough for me to earn here in the cryptocurrency.
Trading is not hobby, It's the way to gain Extra money.
Sorry I didn't agree with your opinion about this.
Trading need time to make us have skill, experience and knowledge.
I also do spot trading in my spare time and got income from it.
Maybe other have own strategy, but I think scalping trading is suitable for me.