Sal Brinton very disingenuous there.
Says that it is factually incorrect to state that only women can become pregnant. Says it has been legally recognised that men, intersex and non binary people can also become pregnant. Who besides a biological woman has become pregnant? You can have a dsd and be female. You can call yourself 'non binary' (whatever that means) and be female.
Says We know that people who are legally male can give birth due to medical sciences as well as the law.
A woman who 'identifies' as a a man is not able to give birth because of advances in medical sciences. No more than anyone else with female biology. They give birth because they retain a female reproductive system and the law has allows them to be referred to men even though that is the case. They are only 'legally' a man. No special drugs or alternations needed for a woman today to be legally labelled a man.
Now, if Sal Brinton has stated that someone who had a female biology and identified as a man was able to sire a baby by producing their own sperm, that would have to be recognised as an advancement in medical science.
Declaring it an advance in medical science for someone with a female reproductive system producing an ovum (fertilised using a man's sperm) which they then carried in the normal way in their uterus and then gave birth...? What is new?