Well, it's good that you've done the research and the math, if you want to build that low. I don't build below 2Ω anymore, so it's just Steam Engine theory to me. I'm just concerned, as any vaper should be, about all these tales of "exploding mods," and as you see right from the initial OP, this idea that somehow "mech mods will explode." They generally won't, unless someone is using them improperly, or using batteries which aren't suitable for vaping at all, nevermind with the kind of amp draw that such low resistance vaping requires, or using/storing them in such fashion that the battery goes into thermal runaway and there are no vent holes.
I sometimes use the "unloaded gun" analogy -- a mech, before it has batteries in it, is just like an unloaded gun -- totally inert, though I suppose you could hurt someone if you bashed them about the head with it.

But put batteries or bullets into them, and it's a whole 'nuther matter entirely, and in the hands of someone who doesn't know how to use them safely, either could be lethal. Despite that batteries are so ubiquitous to modern life, people don't seem to grasp that what they contain is stored energy, and in the case of vape batteries, like car batteries, a WHOLE LOT of energy; if it all gets released at once... that's not pretty and nobody wants to see that, least of all the person who's just try to get a good vape and those around that person.
Andria