Indeed - I'm all for common sense and rules. So, whether you/the OP like it or not, the present 'formal and informal rules' of intellectual street-fighting do allow for the baseball bat of cancellation, rather than mere 'pushing-back', to be used against the 'push' of perceived prejudice. So if that is the 'push' one wants to make, better find an intellectual dojo that only allows pushing, not complain that your opponent didn't behave as you wanted them to.