> I have hope that LLMs might break some people out of their echo chambers

Are LLMs "democratized" yet, though? If not, then it's just-as-likely that LLMs will be steered by their owners to reinforce an echo-chamber of their own.

For example, what if RFK Jr launched an "HHS LLM" - what then?

... nobody would take it seriously? I don't understand the question.