But at this moment in time, they've intersected with the real-world activities of organizations that he has considerable influence over. He seems to have prioritized theoretical point-making over the organizational necessity of addressing people's concerns.

Running things and debating things are two different activities, and for Stallman those things are currently in conflict. Maybe he's tempermentally incapable of dealing with conflicting imperatives; in any case he seems to have taken the absolute route to resignation.