Allow me to illustrate something that you seem to be missing. Here is a sample conversation illustrating how this process normally goes.
Oilfan: "I want Anderson. What will it take?"
CBJfan: "He's not available."
Oilfan: "Oh, come on. He
must be available. What will it take?"
CBJfan: "We don't want to trade him."
Oilfan: "He needs a change of scenery and you guys are doing poorly enough that it makes sense for you to trade him. What will it take?"
CBJfan: "We. Do. Not. Want. To. Move. Him."
Oilfan: "Anderson for Chaisson and a 4th?"
CBJfan: "No."
Oilfan: "Okay, I'll make the pick a 3rd."
CBJfan: "No, because we do not want to trade him."
Oilfan: "Well, what do you need?"
CBJfan: "For folks to stop asking about Anderson. In the interim, however, we really need a #2C. We're not trading Anderson for futures or packages; it doesn't help us."
Oilfan: "Well, we don't have one of those. How about Kassian instead of Chaisson?"
CBJfan:
"No. Did you perchance miss the repeated 'we don't want to trade him' assertions earlier?"
Oilfan: "Look, I get that, but I'm really interested. Please just tell me what it would take."
CBJfan: "UGH, fine. Since we need a playmaking #2C, the closest player in value - and it's not all that close, frankly - is Draisaitl. But that's crazy talk, so we weren't going to go there. Satisfied?"
Bizarro You (leaping in): "OMG HOW DARE YOU TRY TO POACH DRAISAITL WHY CAN'T YOU BE REASONABLE"
CBJfan (thinking): Somebody just shoot me now.
The point is that this "it takes Draisaitl" thing is not something we come up with on the fly just to be jerks about it. It's after getting repeatedly pressured to come up with an answer that isn't one of the reasonable ones you're suggesting. We
do give those sorts of reasonable answers you're suggesting. Repeatedly. It doesn't take. And then when we finally snap and start giving silly unreasonable answers in a likey vain effort to get folks to shut up and go away, crusaders like you suddenly leap into the thread going on and on about How Dare We Go There.
edit: I accidentally a word