If it's opinion then it's op-ed. That's not news. If they were truly honest they would not say they are a news site.
If the misdeed is done by a non-public or poor company there is no money to be made so they would never even investigate it. And not accepting a payoff that returns more than the short position would be ignoring fiduciary responsibility, so some investigations could disappear.
As honest goes: "We are an op-ed oriented information sharing site. We do not adhere to normal journalistic standard."