Have they? I don't like it either but the headline bull predictions(reliable agents and most code written by AI by mid-2026, dramatic progress against jailbreaks, prompt injection, hallucination, etc., major improvements despite pretraining data exhaustion, continued exponential growth on the METR trendline) did come true, often ahead of even aggressive schedules. What major wrong predictions did you have in mind?

Literally none of the predictions you listed in your post came true. We don't have reliable agents, AI isn't writing most code, hallucinations still happen all the time, improvement has been basically non-existent. Despite the constant claims of these experts and AI boosters, AI is still not a tool one can use to get meaningful work done.