[mindslight]

Discussing security vulnerabilities and hypothetical balances of physical power isn't illegal. Or if you're hoping that by not stating what you see as vulnerabilities you won't be helping datacenters (/$whomever) to secure things, I'll point out that the novelty is likely to wear off after a couple uses anyway.

The crux of the matter here seems to be that the masses of individuals need the civilization-reliant power grid much more than an individual data center. And by the time we're considering direct attacks on datacenters, they'll most likely already be off the grid (nuisance noise might still be a motivation though, or general anti-tech sentiment). So we're really just talking about defending a facility from things like drones, which is a generally hot topic these days regardless.