The elephant in the room is that "passing" is often little more than wishful thinking, and people are starting to understand this. Ultimately, a shared focus on full transparency about being 'trans' or 'cis' is quite helpful at de-escalating hostile attitudes and discrimination about the matter - one could admit of rare exceptions, but by and large, anyone who feels like they must hide themselves for "safety reasons" is likely better off leaving the unsafe environment entirely!