We do have words which define biology - female isn’t one which is commonly and consistently used solely for sex categories alone
No, like all words are not commonly and consistently used for one thing.
I can see we were right to take the piss out of the SPS crowd at Cambridge if they think this is a fucking insight.
Guess what - in laws and other formal contexts, you have to use words consistently, and they are used consistently.
If you are going to campaign as a Member of Parliament for words to be used inconsistently, then you need to fuck right off and get a job where you will do less damage.
Advertising might suit?