If that is true, that might be why he is divesting. I really don't think his investments are unethical, as long as they are always disclosed.
But his investments might slightly affect his objectivity, and get his credibility attacked. And since they are not success, there is no reason he should keep them.
frankly I think him having the ability to disclose his investments actually was beneficial for him. He was able to plug his sites a lot more times. i.e. any time he covered a competitor
But his investments might slightly affect his objectivity, and get his credibility attacked. And since they are not success, there is no reason he should keep them.