What I don't understand (unless I read it wrong) is why he's seemingly implying that DC would somehow get out of their agreement with the Siegels and the Shusters by having a new Superman. They still created the concept of Superman. You could have some all new character become Superman and it doesn't get you off the hook with the two families.
Reading the article again I do not believe it is anything but click bait. Both site and author are suspect in the extreme. Plus none of it makes sense. Warner has a settled plan for the heirs and D.C. will never-ever- retire and move on from Superman. Like some of the others out this is not the first time the the author has made unfounded claims along with the reasons why he does it.