IMO there's no real controversy about chain care. Just about everybody agrees that keeping a chain clean and well lubricated helps prolong it's life. There's disagreement about the "best" method of doing so, but the truth is that there is more than one way to skin this cat, and any of a variety of methods is effective if done properly.
Try various methods and settle on the one that work best for you, then do it well and you'll be fine.
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