Apparently someone didn't read Gault's article (he's a questionable journalist in general, but this article was fairly evenhanded), or listen to Seb Coe's addressing of this very question. This isn't a Russia situation, where a whole athletics federation is complicit in the cover-up of systemic doping. Only in these types of scenarios would a blanket ban against a country be appropriate. Kenya's federation and anti-doping agency seems to generally be receiving commendation for their aggressive and transparent work to catch cheaters. As an earlier poster noted, Kenya has taken a crucial step by acknowledging the problem and being open about how they're going to tackle it; frankly, this is more than can be said for the West's lazy and hypocritical attitude toward its own PED problem (see: LetsRun staff white knighting for Houlihan, these boards fawning over American and North or West European athletes while declaring that every Kenyan, Ethiopian, or Jamaican is a doper from the moment we first hear of them).
To be perfectly candid, I get the impression a lot of you are just secretly hoping for the less-developed, non-Western world to be excluded so you can see athletes from the 'right' parts of the world win more medals (whatever you read into that statement says more about you than it does me).