As others said the boot is well within the normal range and looks fine. As far as the amount that the brakes are open or closed here's a bit of general guidance. The shoe travels in an arc as the brake opens and closes. The brake will perform best if the arm is vertical when the shoe hits the rim. In that position the shoe is moving horizontally, not shearing up or down on the rim surface. Many mechanics prefer to set the brake so the brake is outside of the vertical position slightly so it won't pass vertical as the shoes wear.

Where the arm is at the critical moment is a function of the separation of the brake bosses, the rims width and the distance from the shoe surface to the brake arm. Obviously the first two cannot be changed (you could change wheels) so you only option for optimizing performance is by adding a spacer between the shoe and rim. This will push the arms back so they close to vertical and don't pass it.

None of this has anything to do with the noodle boot, which doesn't care either way.