From his website stallman.org:
Richard Stallman has cancer. Fortunately it is slow-growing and manageable follicular lymphona, so he will probably live many more years nonetheless. But he now has to be even more careful not to catch Covid-19.
Recent video of him speaking at GNU 40 Hacker Meeting. Screenshots of video stream.
That’s a terrible joke that deserves the downvotes, because cancer is shit and I only wish the best to anyone who is diagnosed with it, but I laughed.