Inducing catastrophic fractures aside, how do they think they can remove enough heat to cool that much magma enough to mitigate the threat?
Interesting thought experiment, which may lead to useful conclusions, but won’t result in actually cooling enough magma to avert a supervolcano.
I don’t mean to sound snarky, but wouldn’t boring a giant hole down to the molten lava of the earth’s core nudge global atmosphere temperatures a bit higher?