@DadJoke
Giving people the option of "birth parent" as well as mother would be a good solution.
Children would know who gave birth to them, which was the main point of the objection, and trans men would not have to referred to as a mother.
I disagree. Birth certificates record important personal information about the child, and include the parent only in relation to the child. They are identity documents owned by the person whose birth they record and no one else.
And the person who gives birth to you is your mother. She may end up being no more than your birth mother, if another woman raises you or adopts you, but having a social mother does not remove your birth mother from your history. Attempts to do so in the past have led to measurable damage to the children affected. And that's in addition to the issues arising from not being raised by your birth mother. (That's not to underestimate the damage a birth mother can do to her child, but that's not what we're discussing here.)
What is your justification for denying these particular children the most important information about their origin that almost* all other children have - their mother?
*there is a vanishingly small number of children who do not have this information because they were abducted, abandoned or found alone in war zones or after natural catastrophes where no identifying information could be found afterwards.
To create such a traumatising situation by design is an abhorrent demand that completely fails to consider the best interests of the child.
I'm frankly astonished this is even entertained by the courts.