I think the point is (I haven’t read the article) that once an EV is caught on fire, it’s extremely hard to extinguish it, because the battery tends to re-ignite afterwards.

I heard from a firefighter in my hometown (haven’t verified if true or not), the only way to extinguish it was to immerge the car.

But you are right, EVs are less likely to start burning in the first place compared to ICE cars.