Why does the word’s origin make it untrue? There certainly was then, and still is in more subtle ways, discrimination against women by some men, and against men by some women, also sexist. Arguing about the word doesn’t excuse your sneering at the Macron’s wife, or her age in general, in a way you would not have done if the man were 25 years older, which was the point of this discussion. So, you were both sexist and ageist. Own it.
These are leftist terms. You appear to be on the wrong site