I don't think the social problems you listed can be solved by redefining knowledge to your convenience - they can play that game better than you can. The definition of knowledge in this context is simply that which describes reality. And the person you're replying to was correct in saying that the thing gained from the oracle was knowledge itself, even though they've not considered the epistemological nuances.
It's not me who's "redefining knowledge to my convenience". You weirdly succumb to "them" doing that and come to wrong conclusions.
Merely claimed "descriptions of reality" lack the crucial property of truth. The description has to actually fit reality, or it's mere fantasy. It has to be exhaustive, or it remains a facade, leaving you blind to what lies beneath.
When you don't actually know whether it does any of that, you're merely a believer, entirely dependent on your "oracle" and its slave in effect.
Not caring about nuance leaves you open to exploitation, among other things.