This guy doesn't even sound like an AI psychosis case - a lot of middle-aged men who feel insecure blow their entire savings on "sure thing" businesses, gambling systems, etc. They hide the losses and double down until it gets impossible to hide. It doesn't seem psychotic, it just seems like he pissed his savings away on a bad idea because he was lonely.
The AI psychosis I've seen is people who legitimately cannot communicate with other humans anymore. They have these grandiose ideas, usually metaphysical stuff, and they talk in weird jargon. It's a lot closer to cult behavior.