Our rule is to be nice. Being nice is more than just 'not insulting or degrading anyone'.

You entered the LGBTQ+ community to pick a fight with the very population this community serves over a quite literally pedantic idea - what a specific word means in a specific context. You need to rethink your behavior. I'm going to give you a 7 day ban during which you can rethink how you interact with our instance.

Of note, since I do have an advanced degree in a biological field, I'd like to point out that you are incorrect. In biology there's are systems of sex determination. As you'll see in the non-exhaustive but quite extensive Wikipedia article linked, there are many ways in which sex can be classified which were invented by the field of biology. What you won't find, however, is much of anything talking about babies themselves or who has the capacity to physically give birth. This is not particularly surprising to anyone who has a formal training in biology because mammals are rather odd in the scope of all that is biological. In fact, sex determination in humans does not actually have anything to do with the capability to bear children at all and in the field of biology is typically based on the x-y sex determination system (of note here- related biological fields such as the medical sciences do not typically use this system for determining or classifying sex).

Also of note, because you incorrectly ended up dismissing it as not an issue of pedantry, the words male and female can be used interchangeably with both sex and gender. Humans have this wonderful lexical quirk in that we invented language to serve amorphous ideas, not as a means of science, and because of such words mean different things to different people. We have definitions in order to keep some semblance of shared understanding, but even these vary from dictionary to dictionary and are really just a reflection of how the word is being used by humans at the date of printing. Dismissing any discussion about gender because you wish to focus on sex without acknowledging the fact that this language is intertwined is acting in bad faith, but perhaps more importantly it misses out on the fact that the confusion between sex and gender is a regular human action. Governments assign and record what they call sex, through a process in which chromosomes are not measured but rather genitals are observed (and in some cases, surgically changed). Even within the medical sciences where I am employed, people frequently misspeak and mislabel sex as gender and vice versa. The fact that you dismiss or ignore this is either an indication of your ignorance or an indication of coming in here with a specific goal and purposefully acting in bad faith.