Calling it rescue or not doesn't matter. The primary objective was test flight for Starliner. Mission is a success, in that it proved Starliner is not safe. Now they're coming down using Dragon, which is the very expensive backup plan, and which is absolutely not what was planned.
Whether you want to call it a rescue or not and play semantics or metaphors all night is your absolute right, but it doesn't change the failure of Starliner in this case.
Whether you want to call it a rescue or not and play semantics or metaphors all night is your absolute right, but it doesn't change the failure of Starliner in this case.