I don't think one can say that RMS didn't achieve much. He supplied the seed, directly or indirectly, to many free and open software accomplishments. I don't think that would have happened if he'd been wishy-washy, flexible, easy-going guy. He'd certainly have been easier to like, but probably not as effective.

And to reiterate, I don't subscribe to rms's opinion, or think he's right on everything, or anything in particular without further investigation. But I do think lack of compromise is harder than it looks.

So I look at something like Mono, it's a remarkable piece of technology. It's a fairly lightweight managed VM, just like Java but completely and 100% opensource, built on opensource for opensource. It works too and it works pretty well at what it does. There is no "good" or "evil" component to it. Now Microsoft potentially have patents that cover parts of it that they could threaten to use, that's a risk but that risk will also expire at some point. The Linux kernel also has patents that potentially cover parts of it, including patents the Microsoft owns but that's not being treated as a taboo... RMS waters his own statement down by blurring that line between technologies and how the technologies are used.

Instead of bullying Miguel, he should bully MS to further clarify their stance and continue to open their position on the technologies used by Mono. he should be fighting to free that stuff rather than bash one of the biggest contributors to his movement.

There is nothing in ideological purity that demands ignorance of other opinions. And just because you're cognizant of someone's opinion, doesn't mean you have to agree. RMS can say what he wants, and I'm sure he's not ignorant of other's opinions. If you don't like what he says, don't do what he says. If you don't like his philosophy, maybe you shouldn't use GNU software? He doesn't force you to use any software. (Which is more than can be said for lots of corporations.)

Commercial != non-free. Stallman doesn't, to my knowledge, have an issue with the former. He rather dislikes the latter.