Then you are not complaining about UML, but about the old school bad OO designs that UML is meant to support (along with old school good OO designs). Without U

Then you are not complaining about UML, but about the old school bad OO designs that UML is meant to support (along with old school good OO designs). Without UML, such designs would be worse because they would be less documented: if you have a relatively concise class diagram in front of you it's easier to ponder about what each of the arrows and boxes means.