>Because you don’t run a (or several) 42MW natural gas generator without a big fat natural gas pipe.

at 40KWh/kg and 50% efficiency you'd need 2 tons/hour for a 42MW generator, which is a one large tanker per day. Thus you can do without gas pipeline which is a big advantage over electric wires and other static infra when you need to scale power quickly.

Sidenote - it all brings memories of how 34 years ago i worked couple months in a Siberia village powered by working 24x7 gas turbine from a helicopter.

Vs. the original article - i doubt that supersonic core is the best. Supersonic engine is designed to get a significant pressure from ram effect. Until supersonic speed reached, such an engine has bad efficiency due to low compression - that is why Concorde was accelerating to supersonic speed on afterburners (atrocious efficiency just to get to efficient speed as fast as possible). The modern engines from say 787 - they have high compression and best high temp mono-crystal blades, etc. - would be much better.

So AI comes on a truck, not through a series of tubes. Got it! :)