I finally got around to trying this out and it's great.
Sometimes I can't think of what I want to play and the PS4's library is such a pile of shit. Now I can just have it show me what PS4 games I own in a huge list.
I just discovered this extension through a Google search. I am making a "Digital Games I Own" list and this took a task that would have been days' worth of work and turned it into minutes. Amazing!