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.
Yes Stallman have issues but you dont wish someone dead! I know someone who is currently battling cancer and on chemotherapy and its an awful situation just to see it. I hope RMS can beat the cancer.