I think the original comment meant that a 9% interest for a loan is quite steep and might be signaling Buffett's lack of confidence in media as an industry and

I think the original comment meant that a 9% interest for a loan is quite steep and might be signaling Buffett's lack of confidence in media as an industry and its ability to generate value in the long term. However in a deal like this 9% might not be unusually high since the article mentions it is mostly being used to "refinance existing debts" so the high interest is probably a premium on that part