You're totally right and I think I'm the one who didn't get the point of the original article here.

My point is that it's passion that is important and that pushes good to great. Of course designers who only deal with pixels can design the most beautiful websites and sorts but if they are passionate what they are making, they'd dig in to code, which makes their design to real website thing, so that they can communicate with devs better.

So for example, if I happen to know some code, I then will be able to give some deep direction as to how the page scrolling will behave (parallax or not), how focus/active state will behave on certain forms, etc, instead of having devs guess all these things. I'm not really sure if it's possible to understand all these without knowing code...

I also do not believe they have to be able to push their entire piece to live and I agree with how important the separate roles are. We need them. We need to be the master on what we do and we need another master on what they do to collaborate. We just need to understand/know how the other side works to communicate better.