A brilliant little piece indeed!
Don't think it will have an impact, though. People will continue to use an apostrophe like the guy pictured at the top of the Oatmeal piece- shown wielding it like a club- and I will continue to weep profusely.
I can't help it. Anytime I see apostrophes repeatedly misused, here is the mental picture I get of the author:
Anyway. Others on the Oatmeal pages might be more useful, like "I'm The Motherf**king Pterodactyl" or "6 Reasons To Keep Your Tyrannosaur Off Crack Cocaine"