There exists a belief of a concept of 'gender' outside of a person's 'sex', which relates to how a person 'identifies'. (I think this might be about how a person 'experiences being themself', but I am not sure. I think the same term 'how they experience being themself' could also relate to the idea of 'otherkin', but again, I am not sure.). In some cases, a person's 'gender' will be neither 'male' nor 'female', in which case it is termed 'non-binary' (or, 'outside of the gender binary') (I am not entirely sure that this is sufficient for a person's 'gender' to be termed 'non-binary', as some genders are like 'demimale' or w/e, and I'm not sure if these are classified as 'non-binary' or not.).

The term used was 'safe-spaces' and 'exposure to safe-spaces', not 'safe exposure'. 'safe spaces', to my understanding, refers to a area/location/space where people who have certain common beliefs (or experiences?) gather to be (temporarily) away from those who might have negative views of those ideas or of people who have had those experiences or something else like that. I think part of it might be like, defending one's viewpoint against the same criticisms (by different people) repeatedly can be tiring and stressful, when one is trying to discuss things related to that viewpoint, not the viewpoint itself. So the 'safe-spaces' are a place where a certain group can discuss things relevant to that group without being accused or insulted for it? Something like that. I suspect that http://existentialcomics.com/comic/93 is a reasonable representation of some form of the idea?

I suspect that you arent really expressing confusion but are making a point, but I figured that I would give my incomplete understanding of the terms in question, in case I am wrong about that.