People here are overvaluing Young A LOT. Imo I think he is a really good player and will be a top 10 DE. There will be a TON of hindsight bias to this depending on whethter he does good or bad, but this was a fair trade.
Problem is, he has missed a ton of games due to injury and he needs a contract well over 20 mill per year. He probably will demand top 5 DE money which is insane for the production he has shown. That type of pay goes to a guy who has performed at an All pro level which young hasn't been even close to while playing on a top tier Dline. Paying anything above a 3rd was never worth it. Crazy that people thought he would go for a first.
The Chiefs got "lucky" that they have been very good at drafting. Hitting on players like McDuffie, Pacheco, Humphrey, Sneed etc. They basically have gotten like 2 starters out of each draft which is a pretty good rate for a team that is picking in the bottom 5 each year.