That article did a better job on selling the Pro than Sony did.
I never thought we would come out of the event with more questions than answers, but that's exactly how I feel right now. The benefits for non-4k folks (which is most people) were not clearly spelled out.
I also think it's incredibly important to know if games that struggled with performance on the standard PS4 will get a framerate bump on the Pro without a patch? It seems like a patch would be required as the game would just default to the "standard PS4 mode," but to me this seems ridiculous. It should be similar to the Xbox One S where even the old games can take advantage of the CPU boost and new GPU.
And as much as I applaud and welcome the dev decision to give us options, I'm already dreading the choice of deciding between 1080p/60, 1080p/30 with better graphics, or 4k/30 with standard graphics. That's honestly an incredibly difficult decision.