As currently constituted non-competes allow your former employer to take the spoon out of your mouth, so to speak. The proposed change would simply say that they have to provide you with an alternate means of supporting yourself if they will prevent you from working.

It's one thing for knowledge work (even there I'd like to see it go away), but there's zero justification for preventing a guy who gets fired from Jimmy John's from trying to work at Subway or Quizno's.