Or it someone philosophically opposed to the idea of closed source software running on an open source OS?
People with that view do exist, and dismissing their point of view as a troll is a nice easy way of ignoring it without taking the time to think about it.
But can't I do both? I've thought about the whole closed source binaries running on top of the open platform quite a bit since I've been using Linux on the desktop for a number of years now. My conclusion? Better an open OS with a few proprietary applications to fill the cracks than a closed OS and everything being the other way around. That's a personal choice though and I don't try to force it on anybody else. I may politely recite the as seen by me virtues if it comes up but that's about it. Besides, Linux had proprietary shops writing applications for it a looooong time ago so that ship has pretty much done sailed for anybody keeping score. Not only that but Valve produces a tiny fraction of the games on Steam so, whoever's offended, be sure to spread some of that ire around while you're huffing and puffing. And don't look now but the Android Market is full of closed source apps and sure as shit, Android is a Linux to the core. If you think Dalvik is reason enough to beg to differ then I'll direct your attention to the vast quantity of well known apps that are compiled from native code with the NDK making them Linux binaries.
To conclude my repost, some of the previous paragraph is predicated on a presumption made by you that isn't even true. Whether I agree with them or not, people that are sincere in their preference to resist the encroachment of proprietary software on the Linux landscape don't even remotely qualify as trolls. I used the "t word" for the simple fact that I believe the "donotwant" tag on this submission was put there by an actual troll, that is, someone with an axe to grind and not as a representation of a sincere belief. It's an opinion. Deal with it.