In general, this is an interesting topic, because of the various reactions. Some holes are quickly tinkered with. Others were done away with entirely, only to come back in recent years. Yet others are conversation pieces, but aren't on the chopping block. [For example, the 13th at North Berwick was mentioned, but what about the 16th green there? Lots of people think it's over the top, but I don't know that anyone really wants to do anything about it.]
Pine Valley might have been controversial, but no one associated with it was going to change a thing, out of respect for Mr. Crump. [Well, I guess they did take the pimple out of the 18th green.]
Contrast that with the TPC at Sawgrass when it opened, where many holes were criticized. I was actually standing between Deane Beman and Pete Dye when the Commissioner said, "Well, if three players all say the same thing about the same hole, we will look at it, but they probably won't agree on much." Beman was as invested in the design of the course as Mr. Dye was, if not more. But, it kept changing, because today's TOUR does not want the players to be vocally negative about the courses they play.
Tobacco Road was supposed to be controversial, and they embraced that from the start. That's their marketing plan.
Likewise, the 14th at Bandon Trails has been changed at least a couple of times, because retail golfers [including Mr. Keiser] thought it was too severe. I don't know if it's still controversial now, or not. Interestingly, when we were building Streamsong, Bill Coore told me he thought my 5th hole on the Blue course "might be [my] 14th at Bandon Trails," but I honestly haven't heard boo about that hole since the course opened.
I'm trying to think what would be the most controversial hole I've ever built. It's much easier to generate controversy when there are pros and TV cameras around, and I've mostly stayed away from that. Holes like 16 at Pacific Dunes are considered difficult / nasty / etc., but I've never heard much rumbling about changing them. The 13th green at Barnbougle is dismissed by some as silly or unfair or whatever, but plenty of people are still going back there, so it isn't that controversial. We've made modest changes to the 1st green at Stone Eagle, and to a couple at Rock Creek, but I'm not sure anyone really even noticed.
I guess the green I've heard the most about is the 4th at Lost Dunes, which I sort of expected; but at the same time it's funny, because it's not even the most severe green on the front nine!