What does it inspire you to do, though? It is someone saying that their parents are unable to accept them. I say 'them' as it is not clear whether 'trans daughter' means a daughter who wants to transition to male or a son who wants to become a daughter, and the person in the video is androgynous. From the shape of the shoulders I would say that it is a M/F transition, though, so will use 'she' rather than tie myself in knots trying to avoid a gendered pronoun. The same applies if it is the other way round, in any case.
None of it (sad though it may be for the people concerned) addresses the issues of the thread. If anything, it is a representation of why insisting on gender pronouns on emails is invidious. Whichever 'gender' the person in the video prefers at work, their parents (presumably - the video is very vague) are unaware that it differs from the one they know. If she has to declare a pronoun she will either out herself to her parents by using 'she', or it will become clear to colleagues that the person they think of as male is actually female.
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I think your figures and the source are very misleading. We both know it’s nowhere near 1 in a thousand. 
