Observing a Call from ObservableObject without onChange

I have a simple case as follows.

class Monster: ObservableObject {
	static let shared = Monster()
	@Published var selectionChanged = false
}

struct ContentView: View {
	@ObservedObject var monster = Monster.shared
	@State private var isOn = false
	
    var body: some View {
		VStack {
			Button {
				monster.selectionChanged.toggle()
			} label: {
				Text("Tap me")
			}
			.padding(.vertical, 60.0)
			SecondView()
		}
    }
}

struct SecondView: View {
	@StateObject var monster = Monster.shared
	
	var body: some View {
		VStack {
			Text("Hello")
		}.onChange(of: monster.selectionChanged) { _ in
			print("GGGG")
		}
	}
}

So SecondView receives a call from Monster with through onChange.. Is there a simpler approach where SecondView receives a call without it? Thanks.