And even for supercomputers, I doubt that AI is requires or is the best solution. They too can measure their load and detect suspicious processes, and if that is not enough, they can target crypto mining specifically, as it should leave a specific signature.
AIs just make everything easier and more efficient
in the long run that's why more and more companies and institutions are spending a shit ton of money on AI development. While it is not a necessity that should be there almost immediately, imagine the implications and resources they can save in the long run with this tech. Instead of allocating manpower and some time off in detecting some form of irregularity in the processing load, why not allow an automated process that will do the job for you? Supercomputers are often employed on tricky and glitzy scientific and mathematical modeling that require full concentration from those conducting the tests/experiments whatever, so I guess this isn't money down the drain from the Los Alamos National Laboratory.