People who see gender as a F or M binary in 2025 are willingly ignorant to the bone.

Reading the discussions and some of the disagreements, a correction is needed to be more precise.

Some XX people will be Assigned Male At Birth. Some XY people will be Assigned Female At Birth.

“It’s basic biology” mfs when advanced biology

Critically thinking now, how strong is the evidence here?

I agree with Dr. Jey McCreight on the science.

But for determining truth, both sides are wrong here.

Dunning-Kruger is bad, but so is credentialism and appeal to authority.

Many people with PhD's have had Dunning-Kruger. Someone else mentioned Ben Carson being great at neurosurgery, but not politics.

A PhD doesn't make you infallible.

I am saying this as someone who is taking graduate-level courses and will be pursuing my PhD. When I'm correct, it's not because my future PhD causes reality to magically conform to my opinions - it's because I rigorously looked at the evidence, logic, and formed my own conclusion that better aligns with reality.

The phrase is funny but you wouldn't catch me dead wearing a logical fallacy

To be fair, a Person with a PhD still can have Dunning-Kruger on other subjects.

Ben Carson is a great Neurosurgeon, but dumbass on politics.

....and all in between, hormonal and/or physically. "Only two genders" is false

Confidently incorrect is the default with these people. I spend most of my time with family aggressively correcting misinformation about my field and related ones. They will die earlier thinking they know more because of Youtube. Getting them to stop taking bad health advice and mystery joint injections from a fucking chiropractor is the latest battle.

Note how they always enshrine gender in biology, but then make all kinds of non-biological statements about what gender is.

"XX is woman"/"Large gametes is woman"/"can conceive is woman"

And then they'll say

"Women aren't as aggressive", "women are more emotional", "women like being in the home more", "those are women's clothes", etc.

The only reason it's so important for it to be biological is because of how it punishes gender non-conformity and makes the lives of trans people hell. Like it isn't ideologically consistent and they know that. They just don't care. If it was just about genitals or chromosomes, then why is it that gender dictates all these social things about us? The only reason to root gender in how you were born is to ensure gender roles are as rigid and immutable as possible.

I think a lot of these XX XY "only two genders" people aren't just dunning Kruger, they're transphobic idiots with an agenda. So even if they had the science and knowledge it wouldn't matter because they're pushing their hateful stupid agenda, facts and logic be damned. They don't care, they just want to rationalize hating us trans people because we make them uncomfy.