Words exist in context. If I called my female boss a bitch because I perceived her as domineering or demanding, that'd be out of line. If I call someone a dumb bitch for running one of the most toxic accounts on social media posting nonsensical disinformation, that's very different. While I understand that being called a bitch can be very hurtful, I'm not calling you one, I'm calling someone else one, so being offended on their behalf is silly. I'm not gonna censor myself because someone might have a negative association with a word. And before someone says "I've heard the same logic applied to the n word" cool well I'm not applying it to the n word, I already don't say that so I don't need to censor myself.

Etymologically speaking bitch refers only to women, but in modern usage the pejorative is used for both genders

Not the women who aren't bitches, since it's not directed at them.

That's fair. The way I see it, dick, bitch, cunt, asshole, cock etc all mean the same thing. You're effectively calling someone a jerk. Getting nitpicky over which is ok - and which isn't - is a waste of energy in my book. Just because somebody else uses the word more virulently doesn't somehow mean everyone who calls someone a bitch is evil. Part of language is intent and context. If I called a woman a bitch because she was intense or intimidating, that'd be out of line. If I call someone a bitch because they write stupid shit like this and run an account like that, I feel like I'm doing alright.

I call men bitches daily.