Which is usually supported how? By differences in outcome, such as the wage gap myth that just won't die. Do you see what I am saying? It's the same playbook. Evidence of inequality is not evidence of discrimination. You need to show the actual discrimination, not reason backwards. I keep hearing how I bring up old arguments, but I honestly do not know how to respond when I am confronted with a cluelessness about statistics that is several years behind.

Are you really asking that question? In my European country women have been allowed to vote for around a hundred years. There, by all means, exist some people still alive who grew up in a society in which women were not considered the equal of men. Then, these people had children of their own and instilled these beliefs into them. Thus, you have old people complaining about female politicians and how they can't lead, and you have high schools teachers who discourage girls from hard sciences because "it's not for them". I even know one university professor who said sexist jokes in his class and then he hit on his female students. This creates a toxic environment for women studying his class. In the UK Cambridge allowed women to pursue degrees there in 1947. That's 73 years ago. Currently the social discrimination women face is not a completely barred entry, like how it was years ago, but it's a more subtle discrimination. It's things like customers prefering to talk to a male colleague, because they think he would be more competent; bosses making advances towards a young woman and promoting a male colleague who is less competent instead of her; having no "role models" in the workplace because there is no woman in an executive position; being fired/placed on leave when complaining to HR about an incident as to not disturb office atmosphere (the HR's role is to protect the company first and foremost). In the US in tech the biggest problem is not the "pipeline" (that is, how many women study tech at university and pursue a career in this field), but the retention of women. Some of them enter the field, but then leave it for other fields because of the culture in it. There are many examples on r/girlsgonewired, from little things like Notepad++ having sexist jokes in its source code to actual discrimination.

Then there are the expectations we place on women, how in some instances we judge them harsher than we judge men. There is porn and how some men always sexualise women and treat them like a walking piece of meat. There is sexual harassement on the street, catcalling and how women always have to be on their guard even on a jog.

If you think I am exagerrating you can ask your own female friends if they have any examples of ever being discriminated against because they were women.