I agree with the sentiment in general, ollama sucks and is problematic, but the obstacle that stands in the way of that is reflected pretty much right here:

llama-swap handles multi-model orchestration, loading, unloading, and hot-swapping models on demand behind a single API endpoint. Pair it with LiteLLM and you get a unified OpenAI-compatible proxy that routes across multiple backends with proper model aliasing.

The article is just vaguely asserting people can go ahead and install 3 different applications and then figure out how to configure them to talk to each other and do all the things you want it to do seamlessly, without ever even attempting to explain how to actually do that, just to get what ollama does in 1 installer.