I haven't. I just remember people buying crude images of monkeys for huge sums. Those same types are all agog at AI and I don't think their cognition has improved. At the end of it all the block chain is only good for keeping records and that is about it. LLM's will be tools that we use but a AGI or MI as the old scifi books called it is unlikely since the intelligence will be constrained down to our crude level.