I find this interesting, but I'm also finding that these days about 80% of the table in tourneys are all playing aggressive; not saying they are all playing well, but there can be about 5-7 on a 9 ring table all trying to out-aggro each other, with few willing to lay down anything so this isn't working most of the time.
I admit I play micro stakes and FreeRolls, and maybe it changes at higher stakes (above $3) but I manage to make the money fairly frequently, even so. I'm sure this will be covered later, but I think many players these days read so much about aggressive play and think this means 'every hand' or 'every second hand' or 'never fold just get more aggressive', they are not choosing their moments and combining their aggression with all the other tools i.e strong starting hand, position, other players style, table personality, chip stack, etc.
Great article none the less, and good to know there is a 'neutral' and not just aggressive vs. passive.