The reason men explain a lot of things to women is that in general...

Mansplaining isn’t about a man simply explaining something to a woman, it’s about explaining with an obvious tone of condescension because he assumes she must not know things due to being a woman; and I know that men understand the difference because they seethe when women talk to them like a schoolteacher talks to a student. Men very much know what disrespect sounds like, they just can’t fathom that women also care about this