I've always disliked the 'Karen' moniker. I hate all reductionist terms for people. They often start out to have a specific meaning for a specific person, but they're ultimately used to dehumanize people. 'Karen' is a great example of this. It was supposed to be a pejorative term for a middle aged white women abusing her white privilege. Now it's being used for any white woman you don't like. My suggestion is not to use the term 'Karen' instead of looking for a male alternative.