That is exactly what they're doing; they're not buying the issue.
No one is asking the government to censure the issue. People are free to buy the magazine on-line or in other stores. Rolling Stone is not prohibited by the government from publishing or selling the magazine.
So far, the government doesn't seem interested in protecting either soles or souls.
I'm all for reporting the facts on notorious people. The difference between your research paper and the magazine cover is that you weren't trying to make Hitler look like a sympathetic, handsome, innocent idol.