There is no requirement for a university to keep on staff a crazed faculty member who is physically and emotionally abusive.
I don’t see an issue with “academic freedom”...These “professors” can go on teaching whatever BS they want without any discretion, it seems...But when you go outside the “hallowed” classroom and start your BS, you will catch it from the informed public...
Stay in your coveted little “safe space” and you will probably keep your job....