I didn't know that about the origin of the word. But it's not really fair to say that anyone who uses the word "misandry" in any context is comparing it to misogyny. Not everyone knows that the word was created as a counter for the word "misogyny" (Heck, when I first learned the word "misandry" I didn't even know the word "misogyny") and there are people who use the word to refer to someone who dislikes men without trying to imply that it's on the same level as misogyny.

And I'm genuinely intrigued as to why you say misandry doesn't even exist on an individual level. Obviously, people who dislike men exist, so...