We're disputing semantics and equivocating vis-à-vis the word "simulation" yet again, are we? Citing scientific strictures we learned in high school, from Popular Science magazine, or from Wikipedia? A Brief History of Time, perhaps?
In the context of gaming, describing Wing Commander et al as "space sims" is accurate. The term was long ago adopted by computer gamers to describe such games. To set up an aircraft simulator in your home that's as true to life as possible, for example, you'd need to emulate and install all of the avionics, instrumentation, seats, necessary cockpit chassis mockups, large screens corresponding closely to an actual aircraft canopy, heavy-duty hydraulics (for simulating movement and turbulence), a real yoke, throttle, and so on. That's in addition to purchasing the requisite software and CPU(s). Moreover, you'd need a monitoring and evaluation station from which a professional instructor could monitor candidates, and a maintenance crew to service the works as needed. This would cost tens of thousands of dollars at a minimum (not to mention hefty ongoing costs and the electric bill) and without a full setup, it wouldn't be a "real" simulator, because you couldn't train a pilot on it.
If you absolutely insist upon being a fedora-wearing autist, then consider that terms like "space sim" are foreshortenings, or perhaps loan words from industry: space simulation game, flight simulation game, submarine simulation game... hopefully, this conceptualization will be sufficient to appease your autism.