SwiftUI Segmented Picker not responding to user input

I have a segmented picker control that is dynamically generated from my model's values. I have made a minimal reproducible example, and here is the model:

class DataModel: ObservableObject {
    @Published var myObject: Objet = setUpObject
}

let setUpObject: Objet = {
    var theObject = Objet(
            name: "The Only Object",
            descriptionActive: "Segmented picker choices",
            objectTypes: [.choice1, .choice2, .choice3])
    return theObject
}()

struct Objet: Hashable, Identifiable {
    let id = UUID()
    var name: String
    var descriptionActive: String
    var objectTypes: [ObjectType]
}

// the different default types
enum ObjectType: Int, Identifiable {
    case none
    case choice1
    case choice2
    case choice3
    
    var id: Int { rawValue }
    
    var localizedName: LocalizedStringKey {
        switch self {
        case .none:
            return "Error"
        case .choice1:
            return "Choice 1"
        case .choice2:
            return "Choice 2"
        case .choice3:
            return "Choice 3"
        }
    }
}

And here is the View that renders the picker:

struct ContentView: View {
    @StateObject private var dataModel = DataModel()
    @State private var selectedType = "Missing"
    
    var body: some View {
        VStack {
            Text(dataModel.myObject.descriptionActive)
            Divider()
            
            Picker("Which type?", selection: $selectedType) {
                ForEach(dataModel.myObject.objectTypes) { type in
                    Text(type.localizedName)
                }
            }
            .pickerStyle(SegmentedPickerStyle())
            Text("Value: \(selectedType)")
        }
        .padding()
    }
}

With this, the picker does not update on user tapping on it, and the Text view below remains at "Missing". What is wrong here?

Your selectedType and tag on the Picker items have to match:

struct ContentView: View {
    @StateObject private var dataModel = DataModel()
    @State private var selectedType: ObjectType = .choice1 //<-- Here
    
    var body: some View {
        VStack {
            Text(dataModel.myObject.descriptionActive)
            Divider()
            
            Picker("Which type?", selection: $selectedType) {
                ForEach(dataModel.myObject.objectTypes) { type in
                    Text(type.localizedName).tag(type) //<-- Here
                }
            }
            .pickerStyle(SegmentedPickerStyle())
            Text(selectedType.localizedName)
        }
        .padding()
    }
}