Why are companies pouring money into LLMs? Well the naysayers like yourself are simply shortsighted and being negative. I think many businesses are already seeing the power of current models in specific processes. You have to assume some natural progression in the coming years to LLMs and the general ecosystem.

Since you only reference autocompletion and image gen you obviously have not worked with using LLM in business processes. Is there a lot of hype? Certainly, but there is also a lot of value in the universe today for these models.

How do you even define "efficient architecture"? Nobody can define that.