Difference between setting a variable using @EnvironmentObject and @MainActor

Question

Let's say that I have the following:

@MainActor
final class NetworkController: ObservableObject {
    @Published var authState: AuthState = .guess
}

I understand that if I have a function inside that class that sets the authState to other state, that would trigger the UI response, but is that the same as me setting it in a view using @EnvironmentObject?

Example 1: Setting it inside the class

@MainActor
final class NetworkController: ObservableObject {
    @Published var authState: AuthState = .guess

    func setState() {
        authState = .login
    }
}

then either in another viewmodel or onAppear in a view calling that function.

Example 2: Setting it in the environment

struct SessionControllerView: View {
    @EnvironmentObject networkController: NetworkController

    var body: some View {
        Text("Something")
            .onAppear {
                networkController.authState = .login
            }
    }
}

Thanks

EDIT:

This is an overlooked question, Apple is making some changes between these two, they are not the same.