The goon category is interesting in a future world where AI has replaced most jobs, because it can employ an unlimited number of people. (Goon jobs exist to counterbalance other goon jobs. Militaries are the canonical example.) Most jobs -- teachers, auto workers, plumbers, farmers -- have a natural ceiling on employment related to demand, but goon jobs don't because when one side hires more goons, the other side has…
Even today the military encompasses the largest industry in the world. All of the technology we use has been rooted in the Military. Engineering Departments everywhere are subsidized by the Military more than any other department because they know anything you engineer has the potential as a "goon" application.
I don't think "goon" is going away anytime soon, it's a core part of our evolution as a species.