I have had two engine fires myself. They are easily put out. EV fires can be a very big deal.
And once upon a time engine fires were a very big deal. But we still adopted gas engines. And before then steam engines, which could not only have massive fires but could straight up explode. Technology always runs on a curve. And of course we never bother to notice how often nothing happens. There’s millions of EVs out there not catching fire every day.