I see your point about the arguments becoming tiresome (it must be that, like me, you've gotten older? :) ).
That said, I enjoy free software. I want to still do so in X decades time, so it needs to be sustainable. There seems to be a very definite problem of a gender imbalance in free software, relative to software engineering generally. That inherently hurts sustainability by greatly limiting the pool of expertise available to free software, in addition to harder to quantify social sustainability effects.
So yeah, it's annoying we have to spend energy on this, but it seems really important. It's good mjg59 spends energy on this (though, I think he still needs to fine-tune his approach a bit more). It's good the FSF are having a conference.
Course, seems we can't even discuss the issue with each other without getting worked up, so far..