But people come up with arguments that could be called unreasonable everywhere. It's not just a feminist board thing. I'm sure there are posters who shake their heads sadly at Relationships, The Doghouse (self included), Sleep, Behaviour and Development, even S&B, and AIBU positively encourages it.
I don't think the statement 'As you refuse to even admit that there is a difference in how men and women are referenced its clear to me you are clearly never going to come close to seeing the reasoning behind one basic female honorific for all women," means, 'I don't have to give a reasonable argument, I am just going to say "if you can't see the problem then you are ignorant".' To me it means that in order for the opinions of one poster to make sense, some basic tenets of the argument need to be accepted and without that acceptance the rest of the argument will be nonsense.
The background is that there is a question as to the difference between how men and women are referenced. Some people do not see how calling a man Mr all his adult life whether married or single is a marital status-blind title, while calling women either Miss or Mrs depending on whether they are married or single is not a marital status-blind title, and that therein lies the significant difference. The marital status of men has historically not affected their legal rights, aka their freedom. Women's lack of freedom otoh was indicated first by the title Miss, indicating minority, and then Mrs, indicating even more second-class-citizenship. From cradle to grave women were not seen as legally equal to men and the titles they were given reflected their relationships to the people in charge, the Mr's in their lives.
I have lost count of the number of times I have personally come across the phrase all over MN.
For Rhinos -- Mr as a title was the one for the man at the top of the heap. It wasn't used for black men, in the US. The marital status of women (that status indicated by their title as previously discussed) has historically meant legal non-personhood. I did not make up this warped and twisted and denigrated version of what marriage constituted historically. That was the work of legislators and courts and churches.