I think there are field-specific differences. In biology / bioinformatics world the "high impact factors" journals are the norm for tenure or even confirmation

I think there are field-specific differences. In biology / bioinformatics world the "high impact factors" journals are the norm for tenure or even confirmation of work. But highly influential computing related papers are rarely from those journals. Bioinformatics is an interesting exception because it's bridging these fields and you'll see references from both highly reputable journals and biorxiv.