But it doesn't. This is entirely too extreme a statement to be taken seriously. You yourself alluded to the increased ease of interoperability between BSD and Linux, which implies that there is a degree of interoperability (which BTW has been demonstrated) between Linux and Android. That it is less practical is another story, but it's not as though Android is firewalled from '30 years of development'.
You know I'm not talking about Google as a tribe, but referring to the staunch fanboism that, like clockwork, rears its head when something challenges the status quo with something different.
Lack of profile? Ahem, Nokia. I don't think that linux's adoption failings can be trivialized quite so simply.
The source is open. I think you're talking about the release methodology.
Certainly even the basement OSS developer source remains 'closed' until it's committed to the tree.