As far as I'm aware, and as far as I care, the term "antinatalism" has one meaning, the moral case against childbirth arising from the view that it essentially forces its "victims" into a life of non-trivial suffering.
Matters of class, race, gender, religion, and whatever never come into it, for reasons that should be obvious to those who claim to possess a shred of empathy (a quality much talked about but which I increasingly suspect is actually nonexistent).
For one thing, while there is naturally going to be variability in quantity and quality of suffering experienced, between individuals and between any randomly drawn groups of individuals, there is no way of reliably quantifying the sum total of suffering experienced throughout the full lifetime of any given individual, and so any attempt to compare these sufferings is beset with inaccuracies and omissions. The results of any such comparison are of questionable value, at best, if not outright false or deliberately misleading.
All who are born must suffer. That's basic biological fact, and the core of antinatalism. To extrapolate beyond that with necessarily incomplete information is mere presumption and adds nothing useful to the picture.
Furthermore, and much more importantly, as I see it, antinatalism is largely grounded in the idea that no one should be granted the power to determine what constitutes an "acceptable" level of suffering for any other person, even one who has not yet been born. Nobody is qualified to speak with authority of anyone's suffering but their own. Likewise, nobody is capable of measuring how tolerable life is (or will be) for anybody but themselves (and even there lurk myriad uncertainties).
These are, as I have been led to believe, the considerations at the heart of antinatalist thinking. Any form of anti-reproduction argument that disregards or distorts these positions is not antinatalism and should not be confused with it, and furthermore should not be allowed to be confused with it.
The only reason I can see people doing otherwise is to discredit legitimate "egalitarian" voluntary antinatalism, or perhaps to promote some fundamental distortion of antinatalism in the service of political demagoguery of one form or another.
As should be perfectly clear by now, I am fully opposed to any such trends.
