https://www.mycast.io/stories/aquaman-2022-film This is the story. A certain user has been confirming roles which haven't been confirmed, such as Chris Hemsworth as Aquaman, Michael B. Jordan as Black Manta and Nadji Jeter as Aqualad, they were never confirmed. When they confirmed Amber Heard as Mera and then removed it later (because honestly nobody likes Amber now) and, guess what, confirmed Katheryn Winnick instead. And their "source" was this review of Aquaman:
https://nationalpost.com/entertainment/movies/aquaman-is-a-soggy-pile-of-wet-garbage. There are two people who could've done this: the creator of the story making it look better with different castings (ulisesmartinezsalinas) or the person who made most of the suggestions (theoriginalmartian). I can not see who confirmed the castings and if it is one of these two, then please step forwards. If people are gonna confirm castings that aren't gonna happen, I think the feature should be removed completely.