No, I think he is saying an oligarch that has a lot of focus on the rest of the oligarchically controlled media taking control of this piece of media already controlled by the haut bourgeois oligarchy will draw more public attention to the oligarchic control of the media without actually changing the fact of that control one bit.
Which is still, IMO, foolish, given, among other things, the degree to which large swathes of the public have parasocial relationships with the particular celebrity oligarch in question, but it's not saying that making the problem worse will draw attention.
search news.google.com for "oligarch" and see the pattern of how the media has propagandistically twisted this word to only mean a specific kind of person now, conveniently excluding those that control our (Western) societies.
If musk makes this purchase it won’t centralize power any more, but it will draw attention to how centralized that power is. Which is a good thing