Thank you for your response, I think people actually believe this "female is the default sex" thing, look at how seriously they talk about it and please let me know what you think; https://www.quora.com/Why-is-female-the-Default-sex-of-humans/answer/Jeff-Collins-6/comment/110139698

Copy pasting that comment;

"No that's quite a radical change that scientist proposed by wrongly accepting subsequent gene activation processes in such “sox9″ which are genes not located on the sex chromosomes at all to begin with. Of course feminisation will have certain “specialised” differentiating processes too.

However, the main point is there's NO “female equivalent” of “sry gene” that specifically produces “anti-Mullerian factor to stop female sex differentiation which otherwise would located on the X chromosome. In fact, one of X in females is deactivated. Besides, why would Nature want to needlessly create TWO specialised sexes, when one is sufficient as only the male is needed to have a specified reproductive function as seen today. Moreover, if a species were to revert back to asexual breeding like the whip tail lizards or have asexual breeding as an alternative reproductive option such as parthenogenesis which is seen among female Komodo dragon, then it's important one sex remains the “default sex” per se, and undeniably evolutionary wise females maintain this role.

So this new view among scientist is somewhat an illogical one."

They think their "female is the default sex" thing is logical and scientists saying otherwise are being "illogical".

And look at this other comment; https://www.quora.com/Why-is-female-the-Default-sex-of-humans/answer/Jamie-Kincaid-5

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I still think its true that humans develop as female initially in the womb, regardless of what anyone says. Males and female are more anatomically similar than most people like to think. Take it from me, I’m a transgender man and I’ve studied this stuff for years. I can’t think of any other reason I was born trans unless my gender was converted from female to male.. Why would I “choose” to be transgender? I can tell you now it is not a choice, and if it was, I would still be female. Anyhow, I don’t understand how people can say humans don’t start off as female, for me there is just too much evidence and hints. The testicles and ovaries are made from the same group of cells and tissue, they share the same properties, they are just developed differently.

And this; https://www.quora.com/Why-is-female-the-Default-sex-of-humans/answer/Jeff-Collins-6/comment/39448319

Well males and female are more similar than most people think or like to think. I think its true that humans develop as female by default. How could people be born with both reproductive organs otherwise? You’re sort of right, but I still think humans develop as female. The SRY gene needs testosterone to activate it. Its possible to make ovaries act as if a SRY gene was present, by gene manipulation. Sex is complicated yes, so I think humans have a default blueprint