As an atheist myself (and a relatively "strong" one at that - I consider the concept of religion to be toxic), I wouldn't be surprised to see the same reaction in rabid Linux users, or rabid Windows users (although admittedly they're a lot harder to find). The article and summary are heavily focused on Apple, but the core content of the article (and yes, summary) states that it's more about it being a brand that people do build up a "religious" feeling towards.
I agree, I would think that Linux or Windows devotees would generate the same scans too.
As an Apple user (typing this on a MacBook Pro) AND as a Linux user, AND as a Windows user for work, I really am quite certain I wouldn't have these kinds of reactions in my brain to seeing Apple logos. i.e. I am not an "Apple devotee" as the article puts it. I do however suspect you'd see these reactions in my brain for the things I am truly passionate about (sometimes irrationally) such as showing me a Dvorak layout keyboard; a linguistic tree; or the flag of my home country. Note that I don't consider myself "excessively" devoted to any of these things, but I can imagine it would trigger something (these things all do trigger an emotional response for example).
I'm definitely an Apple fan (not a fanboy) since I switched in 2006. I weighed my options for a laptop when I went back to school to finish my undergrad degree, and chose the MacBook Pro. I also went from a "candybar" regular cell phone to the original iPhone, and have sold each old iPhone and upgraded to new ones as given the cost to upgrade, was worth it to me. I also bought my iPad (great supplemental and travel device) but given the cost and features, I didn't upgrade. I also don't own any other Apple products as I have found other offerings (routers, NAS, etc) to be superior. Nothing wrong with liking Apple and their products I say, as long as you make the rational decision behind owning the product.
Always draw your curves, then plot your reading.
