The good news is that moving lines are easily changed. It's very debatable that the rough makes the course harder. It often makes it easier unless it's grown higher than is normal. It does however reduce options and make the course play more one dimensionally.
The biggest shame to me are 6 and 16. As late as '95 those bunkers on the right of 6 were in the fairway. In a Shell match Seve hit as good a shot as you'll ever see out of one onto the green. The rough actually stops balls from finding the bunkers and helps keep the ball short of the gorse, the only defense on the tee shot. The rough here is quite thin, so bad lies rarely happen.
As for 16, in '95 the left route had fairway much, much further up. This rough is fairly thick now so while it's still a popular route, you do take a chance with the lie. But the rough keeps your ball closer in. Fairway would allow the ball to go much further left, which makes the approach much more difficult because of the green side bunkering. With short grass it's a perfect example of the safe tee shot making the second much harder than the aggressive tee shot, which yields a very simple approach.
17 is basically the same. The bail out is left. If that's short grass, your ball just keeps going. But left is out of position for the approach. Frankly I'd much rather have a lie in that rough than a fairway lie 20 yards further left. Of course in '95 that grass was knee high, so that's a different story. The rough further up the hole helps keep balls out of the Scholar's and Progressing bunkers, making them fairly pointless.
I have to say I disagree strongly with the author's claim that the best approach on 14 is from the far right. That's a terrible angle into that green. The best angle is from the 5th fairway. The next best (and easier to achieve) is from the left side of the Elysian Fields. I think it's of more concern that rough has crept in on the left of that fairway. It used to be just the bank that was long grass. Now the rough keeps the ball off that slope which is a huge help. Ditto the additional rough on the left of 5 when play the 5th.