Well, you can. But that doesn’t mean there should be freedom from repercussions.
Twitter has rules, you agree to them when you sign up.
If you don’t like the rules, you can always post elsewhere. Those places may not be as popular because they are full of cunts (to an even greater degree than on Twitter).
KH can say what she likes, but equally, a business can decide what is and is not acceptable on their platform.