A good ui/ux specialist will be interested in reducing error rates and improving ease of discovery and use through affordances and good organization of information and actions. Obviously other business interest may conflict with those goals but those same interests are capable of corrupting engineering as well.
And I don't think ui/ux work is as recent as this is all making it sound. Perhaps it is more common now even for orgs where their bread and butter isn't software but ultimately making tools useful and safe and accessible predates software entirely.