Of course conditioning should match the style of course, but conditioning doesn't have to be a perfect match or even close to get the idea of what should be going on. I can understand marking a course down if after visits at different times of the year it proves to be in poor nick. The opposite is also true. In my experience, this is rare either way. Think about it, its the same for rough and trees. To some degree we overlook these problem issues unless a course is completely congested - don't we? Perfection just doesn't exist on weekly level. Also, courses that are open 12 months (are damn near it) would be at a great disadvantage in the rating game (when they should be at an advantage simply because they can be played all year) because they are more at the mercy of mother nature. I think conditioning has effected my opinion on less than half a dozen courses in GB&I. More to the point for me, if a course is quite expensive, I expect more for money. I may not knock it for conditioning, but that issue may keep me from making further visits. Swinley Forest is a prime example; very expensive and I have never seen better than ok conditions which I can find on £25 course. That is bad news.
All that said, I agree with Bart, generally speaking, courses in the US are far too wet. Sometimes it doesn't matter much because many designs, at least to some degree, support wetter conditions.
Ciao