I beg to differ.

A dev team doing agile, with a team leader who is a manager/dev, can definitely self-organise. The team leader interfaces with non-dev management, removes roadblocks, and in collaboration with the rest of the devs sets the direction for a sprint.

You need this team lader role to keep the suits off your back, and to ensure the demands are achievable.

Project managers used to be people who wandered around with GANTT charts, and signed-off expenses and timesheets. Very rarely, I worked with a PM who saw their role as removing roadblocks, and shielding devs from suits. Those few PMs were a delight to work with (this was long before the appearance of Agile etc.)

> Yes, because left to our own devices, developers will not contribute meaningful business value.

I think that's rather obvious; management runs the business and sells the products. They set the business objectives, and there has to be clear communication between the devs and management, otherwise you get the "rewrite it all in X" syndrome.