""I’m arguing against it because it is meaningless. Because protesting assigned at birth to try and replace it with observed at birth will not “prevent males from deciding they are females” (which is the stated aim of all this). It will have zero effect- as I have explained painstakingly on this thread and others. You know this to be true.""
I don't think anyone IS arguing that it will prevent males deciding they are females.
The argument is that it's yet another insidious creeping of language, a change here, a change there, until language becomes a meaningless soup that really doesn't describe anything accurately.
There is NOTHING ambiguous about saying "recorded" or "observed" at birth.
"Assigned" implies some degree of flexibility or malleability, as if those decisions were in the arbitrary hands of the person who happens to be doing the assigning.
Women aren't just women anymore, they're "cis" women, or "non-men", and all the other frankly offensive and ridiculous terms we have seen creeping into language (I'm looking at YOU NHS), "menstruators", "people with cervix/uterus/ovaries" etc, "chest feeding", and so on.
Language matters.
One small change might not seem like a big deal, but when the changes are being forced upon people, particularly women and their way of describing their world and themselves, we are naturally going to protest and fight back where we see people using terms which imply sex is just an arbitrary accident of some midwife or doctor who's actually thinking about what they're going to have for lunch.
Words do matter.
I think you actually DO know that "assign" was always used when talking about those born with congenital sexual development disorders. I have NEVER heard anyone until the last 5 or 10 years talking about their baby being "assigned" male or female.
"Congrats on your new baby! What did you have?"
"Well, he's been assigned male at birth".....
"Ok..........."
It's just nonsense word soup and another example of concrete words to describe sex and biology being befuddled and confused so that the lines are fuzzy, which obviously all plays into the hands of those who would be happy with that outcome.