Stallman's Javascript proposal seemed a bit out there to me to as I was reading it but then I remembered how many of Stallman's other ideas seemed goofy at the time they were written. In 1989 the GPL was an absurd idea but now it's been hugely successful and changed everything for all of us. He's earned enough lifetime karma points for me to think carefully about what he's saying.

Also, by definition radically good ideas have to start out as radical ideas.