Ok, let's start with the question. Are there 5 female users of this site with 3k or more reputation capable of casting a close vote? Probably not. Going through the roughly 40 or so users who are capable of casting a close vote none of them are obviously female and most of them I either know to be male or have a strong idea that they are. However, this is not conclusive. I've not spoken personally to any of these people in a context in which I'd know for certain if they were male or female (it's not uncommon for females, especially those in technology to choose male or gender neutral screen names) [source].
That said, our overall demographics are strongly female. About 50:50, reflecting closely the overall population (we bend slightly male, the overall population bends slightly female). Contrast this to the overall Stack Exchange population and you see something entirely different. Stack Exchange is about 75:25 M:F, in no small part due to the fact that the primary traffic drivers are sites that appeal to a male dominated profession.
So, while we may not have any particularly high rep users who are openly female, they are here, so let's remember that and not make ourselves look like donkeys with our hooves firmly fixed in our mouths (And this questions' suppositions certainly do that).
How ridiculous are they? Well enrollment at a mid sized (~1000 students) theological seminary in a denomination that doesn't ordain women (namely mine, the PCA), is 75:25, some more research has other seminaries reporting similar or higher ratios (I'll provide more links if you'd like).
All of this combines to make the assertion:
My speculation is that females have very little interest in theology. Most women do not want to think much about serious things. It's boring to most of them. They mostly like joyful things only. Women are more interested in listening songs, watching entertainments, romantic movies, TV serials etc.
…patently ridiculous, and shows signs of either a lack of exposure to actual females or a staid ideal of what womanhood should be. I've had some very deep and thoughtful theological conversations of late with my dear wife. Some of my best high-school memories are having rather deep and involved theological discussions on the subjects of reformed theology and infant baptism with several young ladies who were far more interested in the weighty matters of theology than they were in the other things you list (I actually recently got to revisit one of those conversations yesterday with one of those friends).
All that to say, your assertion is easily proved false in the specific and whether or not it's true in the aggregate, making it unsupported is the very kind of thing that makes women feel belittled, and probably at least in part attitudes like this contribute to why women make themselves anonymous on the internet.