Complete hogwash, but whatever. Stallman defenders would do well to not overstate his and the FSF's present (not historical) importance to the software community in addition to understating his views and the things he did.
But his contributions to the software community, even if not directly through software commits, but through advocacy and ensuring the fundamental freedoms are preserved, are still being reaped to this day.
The same thing goes for the FSF, which, having been founded by him, has a similar worldview. It may not be pragmatic towards startups that want to profit from artificial digital scarcity, but those same startups and other businesses have profited immeasurable through FSF's defense of software freedoms.
Would the world really be better off if the Microsofts, Oracles, and others of their ilk still had the same grasp on the user experience of software? Neither Android, AWS, nor countless other staples of billions of peoples' lives and livelihoods would be a thing if not for the early and ongoing defense of software freedom that the FSF has provided.
Is this all ?
Note that I'm not taking a side here, I'm mostly summarizing the below article: