If you can talk about my irrational skepticism (because I said that "we don't know the future", I suppose?), can I talk about your total lack of common sense?
Because the economy has been growing in the last decades does not mean that it will keep growing for the next decades. Because LLMs have been improving in the last few years does not mean that they will keep improving in the next few years. Maybe, maybe not, your guess is as good as mine. If you know the future, put your money where you mouth is and invest everything you own in LLM companies.
Your overwhelming evidence is about the past: it has been improving in the past.