It's about Ingram's age (still just 20) and what he could become. It's a projection, sure. But he got much better after his rookie year, and he certainly has his admirers on the national scene, including from the folks at The Ringer. He's still on his rookie deal, while Covington is already making more than $10MM and has a limited offensive game, while Saric is at the end of his rookie deal (so he needs to get paid a year earlier than Ingram) and doesn't have Ingram's ceiling as a player, though I do like him as a player and think the Spurs would like having him if he came with, say, Fultz too. If the Spurs are trading Kawhi, my feeling is that they would be looking to try to acquire at least one young player with major potential. That theoretical Sixers offer would just be ho-hum if it doesn't include Fultz. Doesn't really get the Spurs anywhere. At least Anunoby has potential if they do the Raptors deal. Ditto SGA with the Clippers.
As for Murray, I'd be a hypocrite if I said I wasn't a fan, because I'm a big Lonzo fan, due to the defense.