As much as I understand the developers point of view on this, it is different as an entrepreneur. For a startup it is vital to not have half of your companys knowledge walk out the door. This article just says that there are valid reasons why job hoppers can be good employees. Mark Suster doesn't say that you should never change your job, nor does he deny young people to have some more tries for orienatation.
Also, I was really arguing against Mark using it as a filter for ruling out resumes. I just don't think it works in either the positive or negative case. As with most everything in life the answer is more nuanced. If you rule out an entire category of potential employees, you're just limiting yourself.