I'm not a lawyer but if this gets any traction Apple's gonna get big mad about the branding, aren't they? They're basically swiping original Mac advertising campaign wholesale.
The canary in the coal mine will be the Elementary Linux distro's Pantheon desktop which even uses the Command symbol ⌘ yet claims "resemblance to any other graphical environment is purely coincidental".
There was some other Mac-copy Linux distro who Apple did send a C&D to for similar reasons but I can't remember the name.