Sadly, I have seen very troubled, very polite people heavily influenced by others who encourage them to feel victimised, for example by telling them that "misgendering" is hatred, that mentioning their actual sex is "dehumanising", that people struggling with the total upheaval of their worldview is "transphobia" and "bigotry" ... and I could go on. If trans people want their family and friends to understand them, they need to be open to talking about how they feel, they need to be supported to accept that other people also have feelings and struggles, and they need to understand that those who have supported and advocated for them throughout their lives do not suddenly turn into "monsters" when they are told that their much-loved daughter (for example) is 'really' a man and cannot just accept that because people shout that this is true.
If someone takes the post-modern line that their truth is valid, it is hypocritical to deny the validity of their father's. mother's, sibling's, wife's or child's truth. Personally, I have problems with the concept of "my truth" when it clashes with empirical evidence, such as evidence of someone's reproductive role.