You cannot avoid it either way then, I guess. Either you let the system do it for you, or you take matters into your own hands. But why do you feel it necessary to take matters into your own hands? I think that's the actual question that begs answering. Are you unsatisfied with how the system does the resampling? Does it result in a worse quality than your own implementation of resampling? Or is there another reason?

I interpret them to mean "avoid doing it oneself" not "avoid it happening entirely".