This is presented as though it's an instance of regulatory capture - which it may be - but I don't think we really have enough information to draw that conclusion.

It's entirely possible that there was concern for contamination or the like in the methods used, which would be a fair concern. On the other hand, the current manufacturing methods don't strike me as sufficient reasoning to pass on the concept as a whole, if that's indeed what the final recommendation means, as the article seems to imply.