It used to be the reasoning was, in the very unlikely event of a fail, what will happen will be a catastrophic event then we should not do it.
Example Nuclear technology. Some went with the risks and bad things happened.
EV, everything will be fun until a fail. The uncontrollable fires are an acceptable risk to some that they tie lithium batteries to the sides of their houses with their own children sleeping inside. The batteries are very safe. Sure, but what happens when they do fail. I guess humans want to progress technically at whatever costs. In my opinion that doesn't mean we are advancing mentally and fairly. I'll be pondering that when EVs become more abundant and one is smoking up in front of my window as I watch reruns of my favourite TV sitcoms. Please don't park your cars EV vehicles here will be a sign.