I do have a problem with Colin's crusade against duplicates.

You should re-read his comments about duplicates more carefully if you think he is on a crusade.

Here is an excerpt from his most recent comment:

    Those who are interested in this subject and want to 
    discuss it, you may be interested in seeing the points - 
    good and bad - that have been made on previous occasions 
    that this has been submitted. Here are a few previous 
    discussion:

That doesn't look like a crusade against duplicates to me. It looks helpful and I'm glad it's there.