Most of you are missing the point. The 3rd photo shows that the architect did not plan on those shrubs being there. I believe, as Rich has stated, it is a maintenance problem.
Adams picture of a bunker with a Yucca plant close to the lip doesn’t prove anything either, as the Yucca is native to that area, but I can identify one plant in David’s 1st photo that is not native. When I last played this hole, the shrubs were not there & this is where the maintenance problem comes in.
I have no problem with the bunker, but the moment a rough bunker is pictured on this site a chorus of how wonderful it is rises up. We love the natural & ancient look of them, but insist on playing on artificial & over manicured fairways, as is evident to the left of this hole. Nobody has commented on how unnatural that looks compared to the surrounds.
These bunkers are no more manufacture than the bunkers at August National, yet we seem to give them a free pass. If we want truly natural bunkers, then, on a property like this, we should use only the ‘blow outs’ that are already there. Otherwise, we need to accept that bunkers are there for golfers & the purpose of playing golf. Yes, they should be hazards & yes, they will be unfair at times, but a golf course is a totally unnatural landscape & we need to understand that.