I've commented on the pass and how I think he had to try and react very quickly to Brighton's defensive movement and didn't pull it off. Regardless of Zin's part though, the ball was lost in the final third, which is always going to happen at various times throughout a game. That Laporte ends up making a misjudged challenge in his own half does not merit dots being connected to Zin.
He's 22 and relatively new to playing full back; he's got a lot to learn, full stop.
He is our weakest link defensively and opponents will always target the weakest link but he is hugely important to our build up play and was yesterday with two extended assists.
By the way, Brighton attacked slightly more down Walker's side yesterday than they did Zinchenko's; City attacked more down Zinc's side.