I don't think the 'craze' is thinking LLM-based AI will be the singular technology that changes everything.
The craze is that all combined breakthroughs across all types of AI/ML, including techniques that have not yet been imagined, represent a theoretical near-future technology that changes everything.
Besides, 10-15 years is nothing. I don't think 3D printers are a truly transformative technology compared to AI, however let's remember that WW2 aside, it took both airplanes and computers about 30-40 years until they had a broad societal/consumer impact (excluding military uses)