There is none — the title is misleading linkbait. The article only mentions Apple twice, and even then it doesn't explain what "Apple's poisonous touch" has to do with GNOME 3 being almost universally disliked — or as the title puts it, "killed" (which is also completely untrue).
"What happened that made GNOME developers seemingly abandon all sense of sanity and design a desktop interface that almost no one wants?
The more likely candidates for inspiring GNOME's 3.0 stumble is Apple's iOS and Google's Android OS."
Maybe the title is linkbait, but the thesis isn't absurd.