So where are the biggest GPU crypto-miners, and have they turned their GPU's away from crypto to training models? Because when that happens, I can only assume

So where are the biggest GPU crypto-miners, and have they turned their GPU's away from crypto to training models? Because when that happens, I can only assume that time-travel is about to be invented. It just makes sense that someone from the future went back in time and created a crypto craze to rival tulip mania, but to ensure that their operation could finance enough GPU's to eventually invent time travel.