Just something to laugh at.
It's a valid concern and you may laugh but these people hold the real power in the world, so you better be listening to their concerns. Europe is a power hungry continent and the war started by Russia on Ukraine has the potential to cause all sorts of problems to supplies - either Europe trying to stop imports or Russia stopping them in order to apply pressure (even if it would cost them huge amounts financially). At that point all energy will skyrocket and anything that is not critical to industry or keeping peoples home life intact will become surplus. Miners will become on of the first casualties because the job they do (validating transactions) can simply be completed by existing payment networks in a far more efficient manner, even if it is centralized.