>Why not just display the alerts for your area?

Because "Flood warning on roads" is very different than "hey there is a possible tornado/aftershocks/*" and I'd like the 2nd one to take up the entire home-assistant dashboard.

I can either code it myself, or let the model figure it out after passing it the YAML file for the dashboard.

>Why is a complex system of smaller models reporting up to a slightly larger model necessary?

because as the other poster said, cost and speed. thousands of queries every day (potentially) at 30 cents per million tokens is very different than 15 dollars per million tokens.