Just as the immense amount of scaffolding around the dumb-as-bricks CPU enables extremely sophisticated and useful things to be done with that pile of fused sand and copper, the immense amount of scaffolding around the dumb-as-bricks LLM enables very sophisticated and useful things to be done with that pile of linear algebra.
Don't confuse the infrastructure that makes the stupid bit in the middle actually useful with the stupid bit in the middle.
The only one confused here is you, and you've still not managed to tell us in an actionable way how exactly CPU scaffolding is relevant here. Tell us, if it's so easy, or make your millions selling it. We're all waiting.
I'll give you a hint. CPUs never had to interpret the meaning of arbitrary content in order to do their job, and LLMs do.