The first article I linked explained it pretty good, but apparently you couldn’t be assed to read it, but that’s apart par for the course when anyone tries discussing this. Cavill can’t be wrong, yet he literally said he was, but he still asininely pushed for “source material”, which was both books and video game.

“And for me, that’s always a little bit heartbreaking, because I love the lore, and I love the material so much. I wish we could fit it all in, but with the structure of an eight-hour series, you can’t.”

Of course he knew the limitations of the media, he would be daft not to, and you’re even worse for not comprehending this, doubly so when asked for a source and provided it, you still beak off.