If best is defined as easiest, then the "usually" within the quote is entirely superfluous. "If" statements are logically exception-less, and the Law of Conserved Conversation (That i've just made up) means that "usually" implies exceptions. Otherwise it would be excluded from the quote. So I say, pedantically, "duh. but you're missing the point a bit, aren't you mate?"

I like to think of the principle as a kind of Occam's for action. Don't take elaborate actions to produce some solution that is otherwise trivially easy to produce.