Fear of looking unscientific and unreasonable drives Vatican decisions.
This is where the RC tradition over scripture and the Christianization of rationalism leads.
The problem is Aquinas was a genius, but modern rationalist in today's Vatican are not smart enough to do what Aquinas tried to do, thus you get confusing ideas that seem to cause divisions.
https://www.npr.org/2023/11/10/1212319566/the-vatican-says-priests-can-baptize-transgender-people#:~:text=The%20Vatican%20says%20transgender%20people,or%20confusion%20among%20the%20faithful.%22
This is where the RC tradition over scripture and the Christianization of rationalism leads.
The problem is Aquinas was a genius, but modern rationalist in today's Vatican are not smart enough to do what Aquinas tried to do, thus you get confusing ideas that seem to cause divisions.
https://www.npr.org/2023/11/10/1212319566/the-vatican-says-priests-can-baptize-transgender-people#:~:text=The%20Vatican%20says%20transgender%20people,or%20confusion%20among%20the%20faithful.%22