This comment is really below the standards one might expect here, a total and hominem. Why don't you open one of your own big boy books and tell us which one it was that used no em dashes?
And what's your argument? YOU have never read any literature that made use of em dashes? But you're showing no evidence of these dashless works at all?
N=0
And yes, you made an ad hominem, check the site guidelines. You can make your point without being a dick.