It's worse than you are remembering! Eliezer has claimed deep neural networks (maybe even something along the lines of llms) could learn to break hashes just through being trained on exposure to hash/plaintext pairs on the training data set.
The original discussion: here about a lesswrong post and here about a tweet. And the original lesswrong post if you want to go back to the source.
Yeah it's really not productive to engage directly.
I'd almost categorize Penrose as a borderline case of noble disease himself for stuff he's said about Quantum Consciousness and relatedly the halting problem and Godel's incompleteness theorem. But he actually has a proposed mechanism (involving microtubules) that is testable and falsifiable and the physics half of what he is talking about is within his domain of expertise.