Actually, simulators are part of almost all UAS sales. But, while it would be a great marketing tool, unfortunately simulators reveal performance characteristics. Consequently, it is unlikely that we would enjoy a real Argus simulator anytime soon.
What I can't tell is if this development team--Team Macon--is an open source (volunteer group). If they are, one could get them permission to model the Argus fictionally based on public videos and public performance parameters. As long as they had public data and permission to use the trademarked name, I suspect there would not be a problem.
However, the Argus is a little known product--the Macon is an amazing piece of history. Don't know if you could get some hobbyists to adopt it--but, then, I have. Clearly, LTA is making a resurgence and, IMO, this is evidence of it. Greetings, Ren! IJO