SpaceX's Starship exploded during static fire tests.

Much less than if it had actually launched. It burns on the ground, when it blows up in the sky its just pollution. Not to mention all the "venting" that happens during engine relights and coast periods which just means dumping methane and oxygen.

That's not necessarily true, rockets Cary there own oxygen, pure Oxygen can burn hot enough and oxidize enough to burn nontraditional things like steel and concrete, it would also vaporize toxic heavy metals and exotic foreign materials from the rocket itself.

I mean, we were cowboying this stuff back in the day. The science was not very exact, so its hard to know what the blast radius is. I will say, you only make that mistake once.