The problem is that hiring committees are busy, have imperfect information and therefore rely on easy metrics, i.e. prestige of candidate's university and journals where he has published.

Many universities are now signatories of the SF Declaration, where they promise to value research based on ideas, not on prestige of journals: https://sfdora.org

I have noted e.g. UMass goes one step further and asks tenure-track applicants to remove affiliation and journal names on their CVs to avoid bias. So that someone who comes from e.g. Oxford and has published in Nature is not judged to be better a priori than someone who comes from Exeter and has published in JCI.

I think this is a great initiative.