I mean, couldn't it also mean that he was depressed? I have a lot of cis male friends and loved ones, and they do NOT act or feel this way. It's not a requirement of being male. It's actually a symptom of "toxic masculinity", the idea that "real men" don't show or feel emotions, that the only emotions they could feel or display are aggressive and threatening and so the only alternative is dissociation.

If I met a cis guy who felt that they felt nothing, connected with nobody and gave nothing up, I wouldn't assume they were really trans, I would assume they were depressed/traumatised/stuck in toxic masculinity/dissociated. You can break out of that box without betraying your gender. <3