None of the metrics are infallible. They can all be manipulated. However, it's tougher to manipulate them all. So the ideal way is to use all the metrics together. If a domain has a high Trust Flo, but a low Domain Authority, you should research some more into it. The same goes with Ahrefs Domain Rating. The SEMrush Rank & SimilarWeb metrics should be used only for domains with organic traffic.