As I've said, I'm not necessarily for (or against) the idea. I sort of like the phrase "A strong preference for the status quo", but then again isn't that just a benign way of saying "Afraid of change"?
I'm not a proponent of change for change's sake, and the techie in me says "If it ain't broke, don't fix it". Change is only good when there's some benefit to it. In this case, why risk Doctor Who by making a change that isn't necessary and when there's nothing to be gained?
What fascinates me is why such a large minority are so fundamentally opposed.
There are, on average, differences between the sexes. It would be foolish to deny it, but that doesn't mean any given individual man or woman can't be bigger, stronger, more empathic, more aggressive, etc, etc than that average or when compared to another individual of the opposite gender. There are plenty of women who are taller or stronger than me. That kind of argument is why, for example, the British Army is reconsidering its position on women in combat roles. Why exclude them if they meet the requirements of the role?
As far as I can see, the only thing about the Doctor that's definitively masculine is his appearance.