I don't follow IBD regularly, but I don't think they normally just reprint articles from other sources; they write their own stories. They're extremely successful, and certainly have the means to do so.
Hey, I was in IBD once. Front page story, too.
As for Schwab, I think what they're saying is that until recently nobody bothered to make affirmative determination because they just didn't think it was necessary. As a result, there may have been some abuses, but the SEC's 4% figure doesn't suggest that they were widespread.