Considering that Joe_'s example uses a handle and your last two use filename, it could be confusing for a novice.
Why I wouldn't use the second example in production? Readability. Not everybody is familiar with intimate relationship between @ARGV and <>, and this solution doesn't really give any advantage over the common one.
P.S. As for your show-off harshness, I care less for anti-snobs than I do for snobs. You didn't hire me, you have no authority to fire me. Have a good day sir.