I assume you haven't heard of aircraft carriers and nuclear submarines.
Also, nuclear power can be stored in batteries and capacitors and then used to move electric vehicles (including boats, planes, and tractors), so I don't know what the hell you're even talking about.
Eat less meat! How hard is it to compute! So turn off your stupid AI and eat less meat. Do it now, stop eating meat.
I've actually cut my meat consumption way down.
That being said, a person using AI consumes an absolutely minuscule amount of power compared to a person eating a steak. One steak (~20kwh) is equivalent to about 60 hours of full time AI usage (300W for an nvidia A100 at max capacity), and most of the time a person spends using an AI is spent idling while they type and read, so realistically it's a lot longer than that.
Again, your hypothetical data center smashers are going after AI because they hate AI, not because they care about the environment. There are better targets for ecoterrorism. Like my car's tires, internet tough guy.