I am surprised Jordan Wall has not posted on this thread. We were lucky enough to be able to play Riviera for the first time last April.
Having seen pics of the 6th hole, I too thought it must be silly, people must be trying to pitch balls over the bunker and taking gouges out of the green. It looked in photos, as though it was impossible to get a putt around the bunker to a pin position opposite you in relation to the bunker. That is not so, at least in many cases and that is because of the elevation change from front to back which is much greater than it appears in photos or on TV.
On our day, the pin was on the front center and Jordan's tee shot was directly above the bunker. Having been given a line by our host, Jordan tapped his approach putt out and down the slope and it curled right around to about 2-3 feet from the hole. From photos or TV, I would never have thought that could be done. Of course, it would likely be another thing putting from the lower level to a pin on top, although there would be some movement towards the hole in some cases, or so I recall.
In conclusion, it is not as goofy as one would imagine from seeing photos. At least not to me.