S>К примеру, можно вообще не подписываться на события "завёрнутой" коллекции до тех пор, пока на наши события никто не подписан.

sourceCollection1.Filtering(sc1i => sourceCollection2.ContainsComputing(sc1i).Value)

IB>>sourceCollection1.Filtering(sc1i => sourceCollection2.ContainsComputing(sc1i).Value)
IB>>

IEnumerable<Order> filteredOrders =  orders.Where(o => 
    selectedOrderTypes.Contains(
        o.Type))

ObservableCollection<Order> filteredOrders =  orders.Filtering(o => 
    selectedOrderTypes.ContainsComputing<OrderType>(
        Expr.Is(() => o.Type).Computing()).Value);

ObservableCollection<Order> filteredOrders =  orders.Filtering(o => 
    selectedOrderTypes.ContainsComputing<OrderType>(() => o.Type).Value);

new Computation(() => exprBody)

ObservableCollection<Order> filteredOrders = orders
    .Joining(selectedOrderTypes, (o, ot) => o.Type == ot)
    .Selecting(oot => oot.OuterItem);

[Test, Combinatorial]
public void Selecting_Dispose(
    [Range(0, 4, 1)] int index,
    [Range(-1, 5)] int newValue)
{
    ObservableCollection<Item> items = new ObservableCollection<Item>(
        new[]
        {
            new Item(),
            new Item(),
            new Item(),
            new Item(),
            new Item()
        }

    );

    WeakReference<Selecting<Item, int>> selectingWeakReference = null;

    Action action = () =>
    {
        Selecting<Item, int> selecting = items.Selecting(item => item.Num);
        selectingWeakReference = new WeakReference<Selecting<Item, int>>(selecting);
    };

    action();
    GC.Collect();
    Assert.IsFalse(selectingWeakReference.TryGetTarget(out Selecting<Item, int> s));
}

UI binding
WPF, Xamarin, Blazor...