StJemma:
I am a bit dismayed that women aren’t allowed to be placed in these roles simply based on the difference of anatomical parts.
In your logic, there’s essentially no distinction between men and women, except, as you say, anatomical parts.
This is a very important point. As Catholics we don’t believe that the distinction between male and female is purely a matter of anatomy. We beleive that there are fundamental differences in the very nature and being between males and females.
In philosophy this is what is called the ontic nature (the factual reality of being) of the human soul. Humans are not simply the physical manifestation of anatomy, but also are united with a soul that is also male or female if you would. This is one on the reasons why a person that undergoes female to male surgery is not able to be ordained even if they’ve tried to alter their anatomy. Their true nature is what God created them as and not whatever a person believes is true or how they try to modify part of their being.
This is important since the sacrament of Holy Orders makes an ontological change (i.e. fundamental change of being} and as such ordination is not purely a matter of granting authority by human agency. As part of that, the person to be ordained has to have the correct nature to start with.