The author's suggestion here to fix this problem is to have twitter offer feed cleaning tools and un-follow recommendations. Not only will this never happen, but it could create far too many false positives to even be a good thing.

I think the only way out of this is for twitter to put out 1 or a series of lenses with which to view your feed. People still want to follow all of their friends as well as celebrities, athletes, bands, news aggregators, etc; however, they don't need to see all of that crap in one feed. I think it'll be the redditization of twitter that solves this problem.