Is Harrington wrong here?

[Keyser.]

The obvious answer is "no," but I can't help but feel his AQ hand example on pg. 254 of volume 1 isn't the best play.

Your stack is at T1070, with blinds at 100/200. On the button after 4 folds in a one-table satellite, Harrington suggests raising to 600, leaving you with only 400.

His reasoning is that raises to 600 typically win the blinds at this table, but still...isn't an all-in better here with a hand as vulnerable as AQ?

Edit: I'm curious because lately I've had to make many tough decisions as to whether or not an all-in or a standard preflop raise is the best play. Is there a common threshold for when you cross into auto-push territory?