I totally get it and they still are not men who have transitioned in any way…
they are men who have some idealistic view of what it means to be a woman and identify more with that - perhaps they rebel a bit against the stereotype of men (rugger / drinking / men together type thing) and are more attracted to what they see as more feminine- more sensitive, arty, caring etc…
maybe they genuinely have some reason for dislike of their body…
but they are still men
it doesn’t matter how it is wrapped up / what their feelings or emotions are - born a man = always a man.
encourage them to be any type of man they wish, as a man myself I have no issue with more feminine and caring types of men, with those who wish to wear nail varnish and make up, or wear a skirt, etc… but they are still men.
the only reason to label themselves in any other way is to suggest that they are something they are not - and that causes issues…
they are potentially no different a subset of men to short men or tall men, ginger men or fat men, skinny men or musical men, those men who like cycling or those who do weightlifting… they are all still men.
unless they can physically or otherwise change into something else then they can not transition, so no they can’t be trans.