Currently used approach to get List offset

ScrollOffsetTestView.swift

struct ScrollOffsetPreferenceKey: PreferenceKey {
    static var defaultValue: CGPoint = .zero
    static func reduce(value: inout CGPoint, nextValue: () -> CGPoint) {}
}

struct ScrollOffsetTestView: View {
    var body: some View {
        GeometryReader { proxy in
            List {
                SwiftUI.Section(
                    header: Color.red
                        .frame(height: 100)
                        .listRowInsets(EdgeInsets())
                        .anchorPreference(key: ScrollOffsetPreferenceKey.self, value: .bounds) {
                            proxy[$0].origin
                        }
                        .onPreferenceChange(ScrollOffsetPreferenceKey.self, perform: self.handleOffsetChange)
                ) {}

                ForEach(0..<100) {
                    Text("\($0)")
                }
            }
        }
    }

    func handleOffsetChange(to offset: CGPoint) {
        print("SCROLL OFFSET: \(offset.y)")
    }
}