Is it illegal or not a good choice to send HarperCollins or Alloy about LJ Smith being fired?

Is it illegal or not good to send HarperCollins Publishing or Alloy Publishing an email about how LJ Smith should be the one to write the rest of the Vampire Diaries books and how probably not a lot of people are going to buy the other books because a lot of people are angry that LJ Smith are not writing the rest of the books, etc.? Just wondering.