It is to me. And I agree that the term is losing value because it's becoming ubiquitous but it's the differentiation from the first versions of ChatGPT etc., which were purely user input -> LLM -> output driven.
In the context of the title of the hn submission, I read “RAG Context” as “the retrieved content injected into the context window” .... "read" read /rε d/ not /riːd/
> So when an agent does "cat file.txt" that's RAG to you?