Wow I am exhausted reading all 15 pages of posts before mine! Being a girl youtuber, I felt like contributing to the discussion . Also this kinda hits close to home since I know how it feels being outnumbered (as a female engineer in a male dominant field) ^_^
Anyway, in response to the original post, I feel that girl youtubers also have the benefit of a girl support system which may account for views. Although, I feel like at times girl youtubers can get kinda of clique-y (form groups amongst other girl youtubers) which makes it hard to befriend a few.
Could it possibly be that the lack of female vloggers (in comparison to male vloggers) skew the statistic that girls get more views? Meaning if there were more girls out there, then the views wouldn't spike at these outlier female vloggers. There will be a female vlogger for each flavor of creep out there! (joking)
I participate in the beauty/fashion community. Yeah stuff can get cliche as an outsider looking in. But keep in mind these videos of the beauty/fashion type are meant for other beauty/fashion enthusiasts. It gets very niche very quickly. I do agree that at times it gets mundane; my first channel was all about beauty subscription unboxings and by the end of it, I did not want to do another unboxing. In my second channel I wanted to do something different but still be in that niche. I now do thrift hauls, DIYs, and am documenting my "project pan". With project pan, I've noticed that its a niche of its own and I've gotten new subscribers who are also doing their own project of sorts. We've become a support group for each other (viewer engagement is good, right?). Another aspect to this beauty community is to someday get free promotional stuff. Will I ever reach that? Maybe? I digress.
Now the discussion about appearance: I agree it is a frustrating topic. It says a lot about society as a whole: we value looks more than content. Or is it that we happen to notice looks before content? Could it be that attraction is first physical then intellectual?
You may not see it the same way, but these makeup tutorials / lookbooks can be similar to video game walkthroughs. It's basically a demonstration on how to accomplish a certain task; the task could be a look for a dinner date or how to pass a certain level in Portal. So come on, you're telling me you're tired of another foundation routine? Well I'm tired seeing another minecraft, SC2, even street fighter video. (Actually I lie, I can watching anything.)
Also reading the comments from other female posters; you truly are inspiring me to diversify channels. I've been doing a lot of planning for a math/technology channel, a cooking channel, and a random vlog channel. And as you can see, my primary reason to use youtube is to learn how to do stuff. What's yours?
If I am totally off base, let me know. I tend to do that. :-P