You are allowed to close doors without hating who remains behind them.

You can decide someone should not be in your life without deciding they are a bad person. The need to justify distance by building a case against them makes the whole thing heavier and often keeps you emotionally entangled with someone you were trying to leave.

Allow the reason to be simply that it does not work. No case, no verdict. You will find the distance much easier to maintain when it is not resting on an argument you have to keep making.