They'd only give up a decent second if he's worth more than that. They aren't going to pay full price for him. So unless the Spurs and Thunder have dramatically different ideas of a player's value, Smith will probably have to be good enough of a prospect for the Spurs to want to keep for them to get that pick you want for him.
So wait, are you confusing your speculation and "reads" as facts? This whole thread is based on you combining conjecture with your prescriptive view on how the Spurs should be operating. I'm refusing to engage with the idea that Phoenix offering nothing and bad salary is so close to the most the Spurs could expect that they shouldn't go into the season to see if they could do better. A guy playing the position of biggest need in the league, who is coming off a great year and on an expiring contract is one of the closest things to pure value you're going to get. It's like trying to argue that I come up with a specific trade for the Spurs' first-rounder lest we default to believing only one team offering crap is interested in it.
The first part is merely your opinion, and we've debated that long enough to where you can probably forgive me for not addressing it again here. The second thing is the crux of the issue, and no one has disagreed with that. Well, Saric has no value no matter what. He's not going to get an asset worth having wasted cap space and cut another player to hold onto. But Smith being valuable will determine if the trade in this thread would be worth it. But the second-rounder is supposed to protect against Smith being a meh prospect, and it just doesn't do that.
You aren't being objective, and your attempt to steer into an ad homenim is lame. You should own up to the fact that you have opinions and are free to state them, defend them and keep believing them without them being objective fact. You, I and everyone else on ST basically come here to squirt our opinions at each other and potentially support and speculate off them. It's all good. But you are having a hard time separating what you think the Spurs should do from what they want to do. It's cool being disappointed in what they might potentially do, but the question of whether the Spurs should trade Young or keep him is subjective, and you taking a side and then claiming objectivity undercuts you more than supports your position.