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No expert here, but I am deeply suspicious of claims made about the benefits or drawbacks of any particular foodstuffs. Many media stories are based on single studies, and it's really easy to cherry-pick results to support a pre-chosen preferred position. Often there's some industry or other with a strong interest in protecting and expanding its market involved. That's not to say there aren't possibly any problems with soy, I just recommend serious fact-checking. Also, consider that a lot of other foodstuffs have soy-derived ingredients.

Or you could do what I do and work on the assumption that if people in east Asia have been wolfing down the stuff for centuries without any major problems, it's probably not too evil.