People aren't saying AI is going to disappear, although that wouldn't be a bad thing imo. When people talk about an AI crash they're talking about the trillions in investments by the major companies that have been operating at a loss and have no monetization plan that could feasibly recoup even a fraction of that amount. Open source models are nearly as good as the big guys now, and nobody is going to pay hundreds or thousands a month just to keep using chatgpt or Gemini.