It’s a very complex setup, mechanically and electrically, and yes does expose you to both battery and flammable liquid issues.
It’s amazing it isn’t more of a problem, frankly.
From that article:
“In older vehicles, the wiring and batteries start to break down, putting them more at risk of catching fire in an accident. Since most electric vehicles aren’t yet at the advanced age of older gas vehicles, there currently isn’t any data showing if they will be at a higher risk of battery and electric explosions as they age.”
So this is not yet corrected for age of the vehicle.
What's odd is hybrids seem even more likely than petrol cars to catch fire, though EVs are far less likely. I guess the combination gives you the worst of both worlds in terms of fire risk.