I think the statement refers to when already shutting down the program. In that case you don't need to worry about freeing OS managed resources as the OS will d

I think the statement refers to when already shutting down the program. In that case you don't need to worry about freeing OS managed resources as the OS will do that for you when your program exits. Which kind of makes sense but it isn't easy to do without some global flag that you can check and a non-normal destruction path for your objects/data.