I completely agree with what you are saying, but I think what you are getting is a related but slightly different problem: Interpreting/Extracting information u

I completely agree with what you are saying, but I think what you are getting is a related but slightly different problem: Interpreting/Extracting information usually leads to uncertain results, even for humans. I think the Semantic Web doesn't try to solve this problem and doesn't need to. There are other approaches, such as probabilistic programming, that are meant to reason with uncertain data. But to do that someone must make the data available to you and tell you how uncertain it is in the first place. I think that's what the Semantic Web, or whatever you may call it, can do. Make data available, but leave open the interpretation.