In watching the home fire video, you can see the roof venting was done on the side of the roof without the panels.
A UL video I watched recommends that solar panels can be covered to de-energize the system during a fire.
Those fire fighters did not cover the panels they were working near. I can't imagine the fire department taking the time cover panels or even start disconnecting a system when they arrive at a fully engulfed fire situation. They need to concentrate on putting out the fire as trained, not spend valuable time trying to disconnect a solar system.
