Everyone has their starting points. I wouldnt be so hasty to shoot him down so quick. He might one day become like one of the greats in this small world of FS aircraft construction.
Maybe send him some kind, informative advice instead of shooting down his hard work.

It takes a tremendous amount of work to just make the mesh, let alone, painting it, sounds, gauges (ackkkkk! ), animation coding for custom work, getting the SDK system to work right, packaging and installers that can find FS on most all computers and windows variants, as well as taking pictures and.... if you are in another country of another language other then English, then translating your work of art into that language you may not know...
Its not easy...