I have several transwomen friends, in different transition stages. One of them started her transition as a teenager, and she has lived her entire adult life as a woman. Taking into account kids until around 9-10 years old act more or less the same barring their choice of toys, she lived less than 8 years of being an anxious, awkward "boy". Should we treat her as a man, when she never was to begin with?
Another friend of mine started her transition when she was 32. She didn't just "notice" she wasn't feeling like a man at that age, though. For decades, she suppressed her feelings, forcing herself to be more manly by going to the gym in an attempt to erase her own identity. At 32 she just couldn't keep going and had to choose between accepting what she was or end it all. Because of her decision her parents disowned her, lost many friends and had to change jobs.
All of my trans friends have suffered a lot because of their identity. They may not bleed on a monthly basis, nor will they ever have kids, but so what? They aren't monsters sneaking into women's bathrooms to rape everyone there.
They aren't there for fame or to get an easier life. Much to the contrary, they often are insulted, ridiculed. Other women deny them a seat in their safe spaces even when my friends also suffer from unwanted attention and sexual advances by assholes.
But no, let's keep denying their reality and their feelings, right? Do they like to play sports? Fuck them, let's get them banned of women's leagues. Do they feel threatened? Fuck them, let's kick them out of any safe place. Do they ask to be treated as females? Fuck them, let's keep using their old names an make them revisit traumatic experiences.
Yeah, let's be monsters.