Since the dawn of time people engaging in explaining known facts to others in a compulsive manner have been ridiculed.
As an example see the Colonel Friedrich Kraus von Zillergut character in the "The Good Soldier Švejk".
I'm deliberately referring to this novel, because it makes it easy to see that at all times men have ridiculed the same behavior patterns in other men that feminists now seem to discover.
In addition to that, women, depending on their dominance level, also exhibit the behavior of explaining widely known facts.
So the proper term should be dominant-and-narrow-minded-splaining.
As an example see the Colonel Friedrich Kraus von Zillergut character in the "The Good Soldier Švejk".
I'm deliberately referring to this novel, because it makes it easy to see that at all times men have ridiculed the same behavior patterns in other men that feminists now seem to discover.
In addition to that, women, depending on their dominance level, also exhibit the behavior of explaining widely known facts.
So the proper term should be dominant-and-narrow-minded-splaining.