What could LMG have said which would change the reporting of the inaccuracies of their content? Getting a response before hand may be able to get some more information but giving corporations time to react also gives them time to act in bad faith (e.g. cover up or attempt to blackmail, etc).
Wanting to know what the person in the story things doesn't appear to me to support sharing your criticisms before posting. Something being a custom doesn't justify it being a custom (if it really is one).