Why not? What new rule would you suggest?
I would suggest the following is more clearly defined as a rule rather than an ethos
The ethos of this forum must be one of mutual respect for everyone who uses it.
and some clearer operationalisaton of
when the argument becomes heated or abuse begins to creep in, then you will have crossed the line. If you don’t step back from it then you will likely be moderated.
which appears to allow abuse, so long you step back. Also, why only ‘likely’?