I'm not invoking conspiracies about them being mentally ill. I'm suggesting it as characteristic of the type that they are messed up. That's not a conspiracy, any more than saying that people drawn to fighting forest fires are brave or parachute instructors have a high risk tolerance.
People drawn to fighting fires are stereotypically brave, but they are also stereotypically arsonists themselves. The worst people to call when you notice a fire is the fire brigade. They'll just spread more fire! Evidence: they're admitting to burning undergrowth to stop wildfires. "Fighting fire with fire", these people are nuts!
Plus - firefighters: stereotypically buff and desirable. You'll lose your house and your partner.
The right person to call is a poet. Not otherwise associated with fire, handles a lot of paper. They hate fire!