Well that's actually the crux of his argument. It hasn't changed since last year. He's suggesting that you only have to play events that strengthen your own element. You can skip the events that don't help your 1 element. So you can play like 1 week every few months with his method and skip the other months. Since that's realistically all you need to do to max 1 element. Those are the type of people his advice is geared towards.
If you're planning/wanting to play more than 1 week every few months, or plan to build more than 1 element, you can generally just skip/ignore those posts like most committed players already do, and play the game with all the tools of the elements available to you then. :>