Eh, I wouldn’t say there’s nothing to worry about: Worry about taking good care of your batteries is wise. So is avoiding cheap shoddy batteries and bikes that don’t have any protections built in.

Take care of your batteries: Don’t charge them when frozen, avoid extreme heat, protect them from impact/damage, and regularly inspect both your battery and bike’s systems to keep yourself (and your bike) safe.

That said, yeah, cars are still way more dangerous statistically speaking even when only talking about fires.