Verified answer

I think there's a little problem with something called "critical mass", which is the minimum amount of fissionable material you have to have in one highly compact space before you get a nuclear explosion. The nuclear fuel in a reactor is configured such that the critical mass criterion is not met, even if the control rods are completely removed.

It can be taken as a true statement, its true nuclear reactors have the force of a multi-kiloton H bomb, but the precautions today are really good, and a nuclear meltdown is unprovable, but not impossible. in its core, the statement can be true.