out of favor? Why so drastic a change?
Part of the answer is the legacy of violence inherent in the unions. My father talks about how, as a young poultry worker, a crowd of workers he was in was physically threatened with violence by union thugs (and this was by no means an isolated event). This really turned him off forever, and it is multi-generational–his kids hated unions, too.
No, the day of the union Orcs is rapidly drawing to a close.