G.A.S. can be bad if you are poor. I don't mind wealthy amateurs buying lots of gear they don't need.
Well, being definitely on the rather poor side I do enjoy reading threads about "should I get 2x 5d3 or 1x 1dx?" because it puts my personal GAS back into perspective :-) Also neither the article or I said that GAS *makes* you bad, just that it often goes along with it to compensate for the lack of skill and/or experience.
I'm absolutely in favor of people buying €6000 1dx or €10000 1dxs so Canon can lower my 6D to €1500 (which is still very expensive for me)... that's why I voted against Magic Lantern hacking the 1dx into a 1dc, rich people should cross-fund r&d and profits when they buy the premium gear, I'll stay 1-2 levels below that.