It's not a false dichotomy. The infrastructure does not exist and they can't do both things at once

A false dichotomy is when one argues that only option A or option B are available when in fact options C, D, and E also exist.

https://en.wikipedia.org/wiki/False_dilemma

I know what a false dichotomy is. I'm rejecting the claim that we're dealing with one.

They can put the Bitcoin mine out in the middle of nowhere next to the volcano. Building a transmission and distribution infrastructure to the rest of the country can be funded by the Bitcoin mine.

They tried this in Italy 2000+ years ago. A wealthy city will spawn from the mine, but since bitcoin doesn't appease the gods like physical gold does, the city will be buried in ash.

How does the infrastructure not exist given geothermal currently provides a quarter of their electricity?

The parent said with profits they can fund plus some work will need to be made to mine bitcoin possible and those road/building can be repurposed.

That sounds great. Let's hope that actually happens and hope that the geothermal equipment lasts longer than Bitcoin demand lasts. Perhaps, though, if that is actually the plan, they could say as much?