Your society will become an extinct group of people that probably will not even be remembered in another 200 years. If there is another advanced civilization yay attempts to understand the past like Europeans did, they will have an impossible time understanding what happened over the last 80 or so years when people lost the ability to tell the difference between males and females.
Have you ever heard the term “functional extinction”? It’s when a population still exists and it may even be reproducing, but the surrounding conditions and characteristics make it effectively inevitable that the population will go extinct over time. Being unable to differentiate between males and females and treating them the same is clear evidence of a terminal mental virus in humans. This very idea that males and females are the same will invariably die because it is not a successful reproductive strategy by definition.