Nope, I am voting the other way.
One of the best way of telling the condition of your engine by examining the crap that the filter collects. If you have just rebuilt the engine I would change the oil more often for the first few times. No matter how careful you are you will always end up with crap in the engine after a rebuild as rubbish works its way out of all the nooks and crannies and things bed in together,
Fiat would have you believe that you only have to clean out the oil slinger every engine overhaul. I would suggest that if you did this you would be overhauling your engine on a regular basis.
Air cooled engines are fairly hard on oil. In fact the oil in most aeroplane piston engines (Lycoming and Continental anyway) only lasts for 50 hours between changes! Admittedly aviation piston engine oil is monograde crap and I wouldn't want it anywhere near any engine of mine.
Oil is the cheapest part of your engine and I would change it every 3000 miles (5000km).
Chris