Most people I know who moved to Macs didn't do it because they felt Gnome was bad. Most of them did so because Macbooks are excellent computers and OSX is a good enough Unix they can work with.
This design-development schism seems bad indeed. Maybe Gnome lacks a decent leadership, one that lets it be Gnone rather than Windows (Mono, seriously?) or OSX. But then we'd have to know what it is to be Gnome. I kind of like Gnome Shell and Unity and lack of themes means I spend less time customizing my machine and more time working, but I'm not a typical Linux user anyway. What worries me the most is not product quality, but all this toxicity floating around.