Characters
Yes, but Rimmer Directive 217 states just as clearly, "No chance you metal bastard."
— Rimmer · Red Dwarf
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker concedes a point with 'Yes, but' and then cites a rule of their own numbering that flatly answers with an insulting refusal aimed at a machine. The joke is the pompous pretence of official regulation, used to dress up a rude, petty 'no chance'.
Context reviewed