I think you're missing the point or not understanding.
What you're talking about is just running a model on consumer hardware with a GUI. We've been running models for a decade like that. Llama is just a simplified framework for end users using LLMs.
The article is essentially describing a map reduce system over a number of machines for model workloads, meaning it's batching the token work, distributing it up amongst a cluster, then combining the results into a coherent response.
They aren't talking about just running models as you're describing.