Absolutely my experience too. Story points have been an effective tool for me with multiple teams in several different companies over the past two decades. They

Absolutely my experience too. Story points have been an effective tool for me with multiple teams in several different companies over the past two decades. They aren't, by themselves, the complete answer to any problem - they need to be applied within the context of a healthy team and engineering culture. And some senior management persistently misunderstand them and want to do insane things like compare velocities between teams. But they are a good and useful tool in the hands of a good team.