Well, he actually said "debugging code when it is running," which a lot of people find valuable. Of course you can debug anything in the looser sense of the ter

Well, he actually said "debugging code when it is running," which a lot of people find valuable. Of course you can debug anything in the looser sense of the term, but tools like debuggers make the process more productive. And yes, many people are against Coffeescript too for precisely this reason.