Different demographics have different interests on average.
> If you add more women, will there be more knitting-articles? Won't women who studied physics work on physics related articles?
The two are not mutually exclusive. In that case there will likely get both women writing about physics and about knitting. Sometimes, it will be exactly same woman writing both articles. Kind of like same man can write about physics, wood carving, league of legends and embroidery.
> It has everything to do with it. An encyclopedia relies not on first hand knowledge, experiences and interests but on compressing third party information. It's basically an organized collection of book reports, only it's about topics, not individual books, and you get to add the bits of information that you discovered in some book to what others have discovered.
That is completely offtopic, because no one suggested people would write anything except third party information.
> And, again, Wikipedia emphasizes that they do not want editorialized articles, don't want your individual writing style and personal opinions. They want a neutral point of view (that term is used so much on Wikipedia that they just say NPOV), they aim for a constant style of little variance. Again, it's an encyclopedia, not a social network or blog site. They very much do not want to give a small world to each and every editor where they can present their world view, opinions and experiences in whatever way they deem fit. There are sites for that, but Wikipedia is not it.
Again, the only person suggesting that there would be editorialized articles or personal opinions is you.
But actually, yes, individual writing style shows up on wikipedia. Some pages are horribly written and others are well written - that is individual writing style.