I said it before and I'll say it again: this is a bad rule. People can read through the corporate bullshit themselves instead of having some "journalist" tell them what to think of it.
No one has time to do that themself, and the CEOs, attorneys, experts, etc. won't return your calls anyway (they can't return everyone's calls).
Opinion writers are the one who tell you what to think. IMHO, few of them are better than blogger.