If you are going to call out people you dislike for using slurs, let's make sure you are also calling out your friends in the exact same way.
Only caring about it when it's someone you already have an issue with is like using a ruler to measure everyone else's mistakes while conveniently bending it for your friends.
If the behavior is wrong, it’s wrong no matter who does it, you can’t suddenly care about the principle when it gives you a reason to go after someone, then forget about it the second one of your friends does the same thing.
That's not accountability, that's selective outrage dressed up as morality.
Either you actually believe the standard you're preaching, or you're just using it as a weapon when it's convenient.