This is just how journalism works: the reporter has to request/negotiate access to the source. The PR folks will obviously try to spin everything positively to the reporter; that's their job. Afterward, the reporter writes up a story as objectively as possible. When some part of the story happens to be flattering, the PR people will obviously high-five themselves. When some part of the story is negative, the PR people will be disappointed and try to get the reporter to see their side.
See this article [1] from Mark Leibovich for an NYT reporter's account of one of the issues addressed in your links.
[1] http://www.nytimes.com/2016/10/14/magazine/anatomy-of-a-medi...