So you've never used the neuter pronouns? That English applies to objects that aren't sexed? Words like it and their. English is natively gender fluid, as we naturally apply all three to the same word - kitten could be he, she or it if you don't know.
I wonder if this is a problem in languages that apply gender to inanimate objects? At least speakers of such languages, and English is unusual not to do it, don't have to be told the difference between sex and gender.
This whole subject would be a lot less divisive if we only used gender when there is a specific reason to. Which has been happening; a female manager is rarely called a manageress, Head Teacher(which is a title as well as a the position) instead of Head Mistress, etc.
I refer to the Tata as 'she'........probably because she can be unpredictable much like a woman.
I know the latest fad of 2021 is to create the potential for difference between sex and gender, but for 99% of people gender and sex will match. It makes life so much more easy when a boy identifies as a boy and a girl identifies as a girl. In the long run there will be less trauma and less expensive therapy.
It is NOT a fad for those who I have met, who are in the transition process and suffer with insults and threats for them trying to be what for their whole life since childhood, only for them to consider and attempt, with many being successful, suicide because they cannot see a way forward. For them it is not a game but a very serious dilemma between trying to correct what they know is wrong with their bodies or death.
It may be easier for you thinking only between Girl or Boy, but for them it is very, very hard with many I have seen close to breaking point because they just want to be themselves, that is their inner brain self, different to their physical characteristics. The police, as I witness, often have to pick up the pieces when vile individuals, who think they know everything and believe everyone in the world should be like them, shout abuse, mock, and general insult their very existence. This all in 2021, the so called "enlightened" age. Sorry but until the dinosaurs in past thought disappear then the world will not go forward together, and the human race will do everything to destroy itself or make others with diverse conditions terminate their lives.
Live and let live for goodness sake; individuals who worry about what they think is wrong with others should look in the mirror and make themselves, who they consider are better than almost everyone else, more tolerant, understanding and loving of others.