I honestly think that reflects more poorly on the semantic web tech stack than it does on the author of that piece.
I spend almost all of my time thinking about this class of problems and hanging out with other people who do, and sadly it's vanishingly rare to run into anyone outside of academia who's trying to use the classic semantic web stack (RDF an suchlike) to build this kind of thing.
i worked at a then-web3.0 startup in the 00’s that had built something that could have been pivoted into this, but instead the CEO wanted to be like Digg instead.
the commercial community of practice is small for sure.
I spend almost all of my time thinking about this class of problems and hanging out with other people who do, and sadly it's vanishingly rare to run into anyone outside of academia who's trying to use the classic semantic web stack (RDF an suchlike) to build this kind of thing.