I ride my 1190R all year round and commute into work on it.
Modern chains and lubes are a world apart from what we grew up with and as ever you are taking out of your arse. I don't even have a chain oiler and I'm still on my original chain on a 14 plate with life left in it still.
What little maintenance I do to my chain at this time of year (clean and re-grease once a fortnight) is more than equalled by the amount of time you spend cleaning and Scotoiling your GS to prevent it dissolving before your eyes.
Back to the OP ~ I didn't read the article but in my opinion the GS is always going to have broader appeal than the KTM 'R'. The 'R' is a much more focused bike. For me that's a good thing but not for everybody. The GS has hit the sweet spot as a 'jack of all trades' bike but that's what turns me off them, it's good at most things but doesn't really excel at anything.
Now, if we compare the 'S' to a GS then I think it's pretty close. The 'S' has all the techno bollox that seems to appeal to a lot of GS owners. Is a gnats breath off being as good two up. Is better built and, well, just goes, stops and handles in a different league to the GS.
The GS is a tool. A good tool. But, a soulless tool.
The KTM has soul in spades and for me that's what biking is about. Soul
Andres