I have no idea. If I have any Platinum trophies then I don't know about it. I usually ignore them or turn off notifications because I dislike how immersion breaking they are. The last thing in the world I want is to beat a really intense, story-driven quest only to immediately see a little blurb with a cringe-inducing name pop up. Collectable trophies are fine but getting them for completing a quest feels meaningless and intrusive to me.
Probably the only time I've ever hunted for any kind of achievement in a game was with Borderlands 2, since it rewarded you with stat increases, but eventually I asked myself why I was doing something that wasn't fun or interesting so I stopped.