As of a few years ago, my take was that the bunker behind the green makes the hole goofy hard for a typical player. I'm looking at a photo of the back bunker and it's so big, deep and maybe 20 or more yards wide. Bunkers line about 75% of the green's perimeter.
The problem is that some professional golfers can drive the ball past the green, so I guess they don't want them having a relatively easy up and down from behind the green. But for day to day play, the huge and rather deep fronting bunker requires either of two plays. You can play safe sideways and try to hit the front left of the green, which is doable, and then try to two putt to the back pin positions from there. I did that once and it was a very memorable down-in-three moment for me. The other option is to try and hit a soft bunker shot at the right half of the green, which slopes steeply away from the player and is only about 10 yards deep. 95-99% of the time you'll be in the back bunker for your next shot, which requires a tough but not impossible shot back onto the green where a challenging double bogey is within reach.
I don't think that back bunker was always there. How could you make it tough during tournament week for the pros? There has to be a better solution. You could cut the grass to fairway height all the way to the 11th fairway and have them try to get up and down from 25-40 yards away. Or you could let the grass grow to 4-6" and let them struggle with that.
I still love the hole for the way the precise layup short of the left fairway bunker gives you a straight-on look at the deep but very narrow green. From there the front pin locations are gettable. But it's not one of my favorite holes on the course, especially when watching the Genesis Open. Most pros try to drive the green and it seems at least half of them end up in the grove of trees left of the green where it's a crap shoot whether they have a line and a lie to work with.