Depends on amount of communication and informal "connectedness" of the team required for the task at hand. There are projects where tasks are clearly separable

Depends on amount of communication and informal "connectedness" of the team required for the task at hand. There are projects where tasks are clearly separable and all communication required can be done through a task tracker. There are also projects with a lot of active research, tasks constantly shifting, and cultural connection between employees critical (like game dev, with everyone on the team making creative decisions affecting the final product).