* RMS is technically competent. ESR is technically clueless.
* ESR is more charismatic. He manages to convince people he's important. RMS has on charisma.
* ESR will do everything he can do undermine RMS. It's a way of building himself up. RMS will do whatever he believes will further free software. They're both often wrong.
* RMS's writings from the late nineties are prophetic. ESR's writings from the same period are, in retrospect, idiotic.
* RMS created the whole movement. ESR did little bits of damage to it.
This seems a bit extreme to me. I fall more on RMS's side of things, but I also thing RMS would not characterize ESR as "technically clueless" and only doing "little bits of damage" to the movement. "The Cathedral and the Bazaar" is not an unimportant essay, if only as a pedagogy to an important shift in how development can work. I disagree strongly with ESR's attempt to divorce, as he says here, "moral thought" from software - this seems like a mistake to me - but he is not a fool or a dilettante.
I heard RMS speak at a college even here in Bangalore. It was like listening to a Saint. Somebody like Buddha of software. He has a unique appeal which big achievers build around themselves. That sort of a calm confidence comes only through relentless belief one's principles and proven success demonstrating his principles.
Outside of nerd circles, this doesn't have much appeal.
* RMS is technically competent. ESR is technically clueless. * ESR is more charismatic. He manages to convince people he's important. RMS has on charisma. * ESR will do everything he can do undermine RMS. It's a way of building himself up. RMS will do whatever he believes will further free software. They're both often wrong. * RMS's writings from the late nineties are prophetic. ESR's writings from the same period are, in retrospect, idiotic. * RMS created the whole movement. ESR did little bits of damage to it.