I think a lot of us have forgotten that once upon a time, computers were considered thinking machines, not just glorified internet teletypes. Computers were world-changing machines long before we joined them all together.

Given what RMS does all day and what seems to matter to him, this seems perfectly rational to me. Consider how old the GNU tools are, or how long some of them go between revisions. I don't think Stallman needs or wants to keep up with things in real time. I think Stallman is like Tolkien's Ents - he isn't slow, he's just operating on a different timescale to the rest of us.

It's the same sort of logic behind Tim Ferriss not answering his phone or Don Knuth doing his email in six-month batches - if you create enough latency in your connection to the world, you bring everyone else to your pace and avoid having to worry about minutiae. It's amazing how many problems resolve themselves when given sufficient neglect.