Yeah, because you can’t select it when you’re making a wild deck. Adding a disclaimer on the card won’t help, because people don’t read. No, really. Don’t be surprised to see threads pop up after the patch of people asking why they can’t play Quest Warlock anymore.
But we’re talking about nerfing them in one basic mode, but not the other. That makes two versions of the same card. And what to do with Standard Decks in Wild? Remember, there is a way to play SoS in Wild. You make a Standard Deck with SoS and queue up in Wild. Congrats, you can play a banned card in Wild. How is it going to play out then?
And you can’t compare it to bringing in Wild Cards into Standard, because those cards didn’t change. They were the same as their Wild “counterparts”. They don’t do it not because they choose not to, but for consistency. A card is the same in Wild as it is in Standard.