It was never Stallman's goal to "represent the future of computing". It was his goal to preserve the spirit of the past, specifically the 1970s AI lab at MIT where hackers could just log in and hack, and didn't have to worry about vendors locking them out from their data or equipment.
Look, I don't agree with Stallman, on a lot of things including software. But without his sort of lone-voice-crying-in-the-wilderness extremism, where would we be? Lots of people, including Gary Kildall, Chuck Moore, and Steve Wozniak could plausibly claim to have been at the vanguard of a culture of openness and sharing in computing. But it was Stallman who had the courage to come out and say, "these are the freedoms we demand, and you're a shithead if you abrogate them." We need more courageous voices like that. They are in short supply, especially as the loudest voices in open source now come from large companies who have much to gain by compromising the Four Freedoms.
... but he increasingly doesn't represent the future of computing, let alone GNU and FSF. There's a reason so much of Ars Technica's reporting on rms gets headed with that "Old Man Yells At Cloud" meme image. Sometimes, leaders are changed out. Stallman's continued work is up to Stallman, but he doesn't necessarily get the privilege of continuing to lead GNU (and he doesn't have the privilege of continuing to lead the FSF).
Besides, this is open source we're talking about, not a VC company. If people rally behind rms and fork the projects, the projects get forked.
But I anticipate that won't happen, because he increasingly doesn't represent where software is going. I don't think he actually wields the thought-leadership cachet he used to. We shall see.