SwiftUI View is reinitialized when @Binding Property has not been modified – Ios swift

I am executing a SwiftUI playground that contains 2 labels and 2 buttons that modified the value of these labels.

I’ve stored the value of these labels in a @ObservableObject. Whene I modify the value of any of these properties, both views CustomText2 and CustomText3 are reinitialized, even the one that his values has not changed.

Code:

final class ViewModel: ObservableObject {

    @Published var title: Int
    @Published var title2: Int

    init(title: Int = 0, title2: Int = 0) {
        self.title = title
        self.title2 = title2
    }
}

struct ContentView: View {

    @StateObject var viewModel = ViewModel()

    var body: some View {
        VStack {
            Button(
                action: {
                    viewModel.title += 1
                }, label: {
                    Image(systemName: "globe")
                        .imageScale(.large)
                        .foregroundColor(.accentColor)
                }
            )
            CustomText1(
                    title: $viewModel.title
                )
            Button(
                action: {
                    viewModel.title2 += 1
                }, label: {
                    Image(systemName: "globe")
                        .imageScale(.large)
                        .foregroundColor(.accentColor)
                }
            )
            CustomText2(
                title: $viewModel.title2
            )
        }
        .padding()
    }
}

struct CustomText1: View {

    @Binding var title: Int

    init(
        title: Binding<Int>
    ) {
        self._title = title
    }

    var body: some View {
        Text("(title)")
            .foregroundColor(.black)
    }
}

However if I store both properties as @State in the view and I modify them, the CustomTexts are not reinitialized, they just update their value in the body without executing an init.

Why are they getting reinitialized when I store both properties in the ViewModel?

I’ve tried to make the views conforming Equatable but they’re reinitialized.
Can be a performance problem if the views are initialized many times?

I am interested in not having the subviews reinitialized because I want to perform custom stuff in the init of some subviews.