Op I would like to tell you that if someone is master of shorting then Bitcoin isn't a bad asset for the purpose. I personally know some traders who only short crypto assets including Bitcoin and they have made a lot of profits by doing that.

I know I'm also supporter of those who buy and hold Bitcoin but it would be unjust to say that the ones who short it aren't making money out of that shorting process. Surely the ones who short it with leverage are the ones who are at huge risk of losing their capital but as long as one doesn't use leverage then short Bitcoin is safe if that person knows what he/she is doing, and when to open a short position.