Floyd L. Davidson
The OP seems to be well aware that a more functional OS is eventually going to allow him to produce better results...]

Tony Cooper
I am curious how you come up with this. To me, it's like saying a better developing pan will lead to better photographs when working with film.

nospam
the advantage of a more functional operating system is the availability of more functional apps which can produce better results.

sid
His OS of choice does not at all improve or hinder his ability to take good photographs. In your opinion his OS may limit his ability to post process his photos but in others opinion it does not. There is little point in having the whole photoshop vs gimp discussion here again is there?

nospam
better apps can also greatly increase productivity, which means fewer hassles in producing the results, leaving more time to concentrate on photography itself rather than the processing.

sid
There are any number of good programs available for his OS allowing him all those advantages too, why do think that's not the case?