While it looks scary as fuck, wouldn’t it not actually explode unless the gas pipe melted through? There’s no oxygen in the fuel, so it can’t combust. I guess as the gas heats up, it’s also possible the for the tank or lines to spring a leak.
Either way, I’d be nopeing out and calling emergency services.
I think you’re right. I was curious, so I looked it up.
The melting point of copper is 1,085°C, and judging from this chart, its definitely getting close: