I think he makes some great points. I worked at Microsoft as an Intern for a spell, and contrary to popular belief, there really are plenty of smart, hard working people there.
I wonder if the major disconnect between RMS and deIcaza is that deIcaza deals with the people at Microsoft, whereas RMS only sees them as a corporation. Thus, deIcaza might see them as a diverse and malleable entity and RMS would not. Of course, I don't have the inside scoop here, so I'm just conjecturing and could be completely wrong.
I interned there as well, and not only did I find plenty of intelligent people there, (including you, what's new Mark? ;) but I also found a hotbed of innovation and unique ideas. I think it's annoying how so many of my peers treat the company like it's a collective of unimaginative, unintelligent sellouts.