It is surely an infringement of basic human rights to insist that someone must conform to, recognise or accept the identity preferences of another person. Someone who might meet this man on Tinder is fully entitled to hold that he is in fact (and I do not use the word lightly) 49, 59, 69, 79, 89, or even just 9, or indeed any age, even one without a 9 in it, and neither they nor anyone else should be oppressed, repressed, suppressed or even for that matter just pressed because of it. Although that said, someone who in turn oppresses them (the persons not accepting the first person's identity preferences) because of that should not in turn be oppressed because of that subsequent that. And so on. No one wants a culture of oppression to reign, except perhaps those with a valid preference for that, for which view they should not be oppressed unless it is by coincidence their preference, in which case it should be an option, but not a requirement, imo.