Kelly's reasoning was that unlike other planes, it would require pilots with something more than "wrist time".
Thus, the 38's had the yoke, requiring "2 hands" .. of which only those that did the REAL thing (or had it so big 2 hands were required) would fly it.
The result? All american highest scoring aces flew the 38.
And Kurt Tank barely used 2 fingers FYI. To fish it out.