I don’t think you’re trying to discuss these things honestly. Are you really saying sexual characteristics aren’t controlled by hormones and these sexual characteristics don’t have any effect on how humans think about their gender?

So in this case, do these characteristics stop a man from identifying with the gender they were born with?

We all start off genderless until testosterone washes over the male unborn foetus starting some of the gender characteristics like penises and brain changes. I think (it’s hard to tell as you’re so muddled in your thinking) you’re taking the bell curve of differences and how those differences manifest and attempting to make up concrete rules. Statistics doesn’t work that way.

If testosterone is the defining characteristic of being male, I have no idea why trans people born male need take hormones to reduce testosterone levels.

Also gender is independent of sexual apparatus.

I really don’t get your argument at all. Testosterone and other androgens can increase masculine features. In a purely statistical sense gender and sexual apparatus are heavily correlated, but then I see gender as being more of a spectrum than a binary anyway. I think these things can be influenced by the environment a lot, if you believe you’re a bunch of chemical reactions happening in a biological system how can what we be anything apart from hormones, genetics and culture interacting to express a gender?

The development of masculine features or otherwise in no way necessitates the development of a matching gender identity.

What exactly do you think being transgender means?

Yes.

If you've never been fit enough to do something like a muscle up then you have no idea what having testosterone feels like.

I'm saying this as a former blob who got fit during covid by accident. You are your body and your body happens to have a mind, not the other way around.

This has nothing to do with transgenderism at all. Completely different issue.