It could. But so could a crash of a truck or a train carrying any type of liquid/gaseous fuel (e.g. truck carrying the gas to your local gas station). The article talk about LNG requiring thicker tanks than ethylene and ethane, both of which could also 100% explode if in a wreck.

I think the worry is that the volume of shipments for LNG would be much higher, and hence the probability of something happening is higher. A singular shipment of LNG would be no worse than a single shipment of car gas.