But the statement "women weren't allowed to get a bank account in the USA until 1974" is false. Women were allowed to. And banks, depending on the area, were allowed to deny them service merely for being women. That was the bad thing that got rectified in 1974.

The "women weren't allowed" is hyperbole at best, and lying at worst, to try to overemphasize what is already an injustice, and makes it easy for those that would argue with the general point being made by dismissing something that is clearly and demonstrably false. It hurts the argument.

And if the idea you are professing is that if even two women were denied access to bank accounts, then "women were not allowed to have bank accounts" was still true and accurate, then you (and the OP) are being deliberately misleading.

The reality is, it was shitty that it was legal and acceptable in the past to discriminate based on race, gender, or any of the other protected classes of today. It's bad enough as it was without suggesting "women weren't allowed to get bank accounts" or "black people weren't allowed to buy samdwiches" (because it was legal for a restaurant to deny service based on race).