For an unconfirmed fire indication?
For one that won't appear to extinguish - as I made it clear, that I would not know how to confirm nor quantify it. Perhaps you have some training or knowledge in that area? Perhaps some common sense systems knowledge I have managed to bypass? I'm certainly open to suggestions to guarantee safety of all on board and avoid unnecessary injury.
Think about the risk that someone might get seriously injured during the evacuation.
Yup, almost certain to happen and already noted.
Cargo smoke detection and fire suppression didn't become mandatory until recently. A lot of aircrafts are still flying without these systems and that include modern aircrafts like early 737NGs. At my previous employer most of the aircrafts didn't have it.
Interesting. But then surely you don't know, you can only work with the information you have. Anyway, the equipment fit on other aircraft is not relevant to the decision making process.