Whether you trust the URIs or the data that was placed there is not a problem for the semantic web. The fact that you _can_ state these things and relate to other resources and concepts on the web is already wonderful and useful in itself. Google is reading this metadata and relating it to their trust/ranking-graph. The semantic web 'community' could do the same later also, in a more decentralized way (blockhain web IDs perhaps?). For now it all works fine.
Whether you trust the URIs or the data that was placed there is not a problem for the semantic web. The fact that you _can_ state these things and relate to other resources and concepts on the web is already wonderful and useful in itself. Google is reading this metadata and relating it to their trust/ranking-graph. The semantic web 'community' could do the same later also, in a more decentralized way (blockhain web IDs perhaps?). For now it all works fine.