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.
The source code merely being “available” isn’t the same thing as the user having the legal freedom to modify and share it. Besides, that’s not always the case; sometimes JavaScript is minified, obfuscated, and packed in ways that make it effectively no different than any other compiled program.
Note that source code is “the preferred form for making modifications” so obfuscated code is by definition not the source.