Interesting, that makes no sense to me. I assume you don't touch type.

If you touch type, you hold your 4 fingers on ASDF. If you want to press Ctrl+C, you move your pinky to Ctrl and press C with the index finger or middle finger.

On Macintosh, you have to hold your pinky much too close to the index finger to press Command+C which are very close.

If, instead, you use thumb and index that also puts the thumb in an awkward position because you have to cross the fingers (Command is to the left of C)

What fingers do you use?