The failures of third-wave feminist wrt industrial exploitation of women & the manifest inadequacies of second-wave feminism are how I found Marxism. That said, I would probably categorise 'anti-feminism' as a reactionary mentality different to being critical of a particular doctrine of feminist thought - even though 'feminism' without description is a meaningless word.
I appreciate you bringing this up and moving the conversation forward about what is often surprisingly contentious for Marxists about feminism, though (the status of prostitution) - it's important for Marxists to establish a proper line on women's rights and not merely mimic liberals on issues that they may not be informed about