No way. It's not a listing of failure modes covered under warranty, never mind a ranking of "failure rates" as you claim in the thread title. They're merely showing which types and extent of product abuse will and will not invalidate the warranty. Nothing less, nothing more.
You described this as a list of "common failures that are causes for returns" -- but that's not what this page is, in any way, shape, or form. It's not a statistical ranking of anything. It's not a list of failure modes (if it were, it would have to include all the failure modes that have no visible flaws). It's not saying that people are to send in drives because of these things, only that they will or won't reject a warranty claim. And nothing here -- NOTHING -- tells you ANYTHING about the quality of the product because there is zero context as to the frequency of failure. (Frankly, I'm surprised they will provide warranty service to a drive with such extensive SATA connector damage. That takes some serious abuse.)