I find it much easier to use random-character passwords. Memorize a few, then cycle them. You'll pretty much never have to update them. If you can't memorize them all, use software for that.
The "dictionary attacks" sentence is a non sequitur. The number of possible eight-word Diceware passwords is within an order of magnitude of the number of possible 16-character line noise passwords.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.