Fires are horrible; living in CA I am all too aware of this.
But so far, from a fire per miles traveled standpoint, Teslas burn from fire at a far less rate than ICE cars. Like 10 times less.
The US average is 1 fire per 19M miles traveled. Tesla's average is 1 fire per 205M miles traveled.
Yes, Teslas constitute a small percentage of the vehicle total...
That's where a comparison based on fires per miles driven, while imperfect, gives a little clarity.
Of course, cars burn from crashes as well as other causes unrelated to the car, such as arson and structure fire.
Part of the reason Teslas are involved in far less fires are their young age; they are relatively new cars overall.
Tesla Fire report 2012 - 2020