That's not honest debate.
>seems like a willful misrepresentation of the aims behind the concept.
As a white male I am often told that I'm not allowed to participate in discussions because of my race and gender due to the discussion taking place in "safe space." No matter what the original aims are behind the concept, it is easily corruptible and almost never used in the "best case scenario." It's usually used to set up echo-chambers where individuals can feel safe from criticism or debate. It has no place in a healthy society, IMO.