ORIGINAL: britbrat
Paradigm, models are frequently configured well outside the norm for full scale aircraft, or even outside what is workable in FS aircraft without computerized control systems. They are alsocommonly flown well outside normal full scale flight envelopes. A simple standard model flight trainer has far more dihedral & far greater vertical separation between the center of pressure & the center of mass, than is the case with virtually any full scale aircraft. What isn't significant to you -- is not significant to you.
Yeah, a typical foamy or 40% aerobat might have a little trouble meeting Part 23 stability requirments! But then you don't have to fly them cross-country, with Grandma in the right seat. We can't have airplanes doing walls and waterfalls just because the pilot dropped his pen and inadvertently pulled on the yoke as he reached for it
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Just because it doesn't have a 5% static margin, or doesn't meet part 23 requirements, doesn't mean it isn't flyable as a model.