I do think that you're probably correct with the meat of what you're saying, but there's no question that at best half of your comment is relevant to the actual discussion and the other half describes itself at least as well as it describes the comment it purports to.
My suggestion: your vitriol should be proportional to the strength of the evidence you present rather than to the strength of your feeling.
While technically your comment isn't an ad hominem since you attribute all these terrible things to the comment rather than the person, I can completely see why it rang a lot of the same bells as an ad hominem argument would for some people.
>Android is no longer meaningfully open, other than a years old core of basic functions.
This is wrong, and things I think are wrong don't belong on HN. I suspect you weren't voted down because of the (logically fallacious) appeal to consequences.
Just to be clear, Google has always had closed source, proprietary Google bits (gmail, maps, etc. Originally they even built these as a big binary blob in the platform image, and it was "fixing fragmentation" when they moved them to separate apps), and the open source Android bits. Everything you heard about Android 4.3 is in the open source bits.
People have created their own definitions for these things on no basis. There's a reason why there are so many terms in the open source world. There's Open Source. There's Free software. There's Free and Open Source software. They all mean different things, and the reason we nerds have so many definitions is precisely to avoid these kinds of misconception and false expectations. Ironically they've become complicated enough that everyone else ignores their definitions.
This is so utterly and complete wrong, and is the sort of ultra-polarized, hysterical comment that does not belong on HN. I suspect that the single and only reason it isn't dim gray is the appeal-to-sympathy "you downvote the truth!" noise that manipulates the weak-willed.
Just to be clear, Google has always had closed source, proprietary Google bits (gmail, maps, etc. Originally they even built these as a big binary blob in the platform image, and it was "fixing fragmentation" when they moved them to separate apps), and the open source Android bits. Everything you heard about Android 4.3 is in the open source bits ("years old core of basic functions" -- what obnoxious, noisy prattle).