Of course, that is exactly true. But, being born of a woman, how did He avoid having His human nature tarnished with original sin? The fact that we know Jesus could not have posessed original sin does not make the question go away.
The Protestant does not hazard an answer to this mystery but trusts in God. Others have been less judicious.
As I pointed out, Catholics view original sin as lack or privation of grace, so there's no question of it being "transmitted" as though it had ontological existence by itself.
So I don't have any idea who those "others" you think are less "judicious" might be, but they aren't my co-religionists.