I feel like Adams uses the word "science" to mean lots of different things in that article. It can be a process, or it can be "the people who perform experiments to see what happens", or "the media reports on those experiments", or "the government policies influenced by advisors who followed the media", or so on. This makes it hard to unpack precisely what he's saying.
But I don't think it's about assigning blame. He's attempting to describe a situation and how it came about. If all the public sees is the media's irresponsible reporting on journal articles, then for current purposes it doesn't much matter if scientists themselves are trying to correct the media. The public will read the newspaper, the newspaper says science says X, and X turns out to be false. Then they read the newspaper telling them science says Y, and they won't believe Y.
But I don't think it's about assigning blame. He's attempting to describe a situation and how it came about. If all the public sees is the media's irresponsible reporting on journal articles, then for current purposes it doesn't much matter if scientists themselves are trying to correct the media. The public will read the newspaper, the newspaper says science says X, and X turns out to be false. Then they read the newspaper telling them science says Y, and they won't believe Y.