Okay, Diamandahagan, forgive me for this, but you're being awfully naive.
The fact of the matter is, for men who transition later in life, YES, there are physical differences in the bones, and sometimes, these things are visible.
Also, usually != always. He admits that there are times he can't tell the difference with that.
Diamanda, we have MANY trans people on this forum. And many more allies. I'm one of these allies. And so is he.
I'm just going to flat out say it, you're overreacting to him. Making a mountain out of a molehill.
Calm down. Take a deep breath. This isn't worth the energy.
And no, calling something weird isn't an attempt to belittle it. I'm weird. I'm strange. And I'm proud of those things. Because it makes me who I am.