If you like to address them in public, why don't you send in your own letter? Ah wait, I suppose you're not interested in "useless polemics".
1. Those "masculine" letters were written by non-CPGB'ers.
2. The CPGB has also published letters countering them.
3. They publish these to let debate occur and be able to engage in ideas.
4. If you see something "anti-feminist" in those articles, then I'm just not seeing it. Oh dear, I must be "anti-feminist" too then!