Sadly, other people did and have understood this for over 40 years. My first article on advanced perceptron processing to account for "real reading behavior".. ya'll just wouldn't listen.

https://link.springer.com/article/10.3758/BF03203564

And I do think the WWW did accomplish what we knew it would (me, from 1993). My original web page, from 1993ish is still online at www.cs.cmu.edu/~rht

Here is my poem on the thing you are calling the Semantic Web ...

https://medium.com/@rhtcmu/world-wide-web-d383579f18aa

I would call that completely successful and affecting every human on Earth today and probably forever due to the extensibility given by Post, not Berners-Lee.

The Semantic Web ideal, though the web failed the utopian idea, still exists in knowledge graphs as you recognize.

I just don't think you understand how, most fundamentally, the human brain (or any brain) computes and thereby where you will actually, computationally, find the ideal semantic web someday:

https://medium.com/p/41ebe7428ff9

For over 40 years I have always said that AI is not Science, it's Engineering. The science is in Cognitive Science...particularly computational cognitive science. New stuff there:

A lot can be learned if you stop thinking the truth is as important as deception in your modified semantic web.

https://medium.com/liecatcher/cheating-and-deception-4e40db6512cd