Running multiple Turtlebot3 - adding namespaces (ROS2- Eloquent)

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Hi all!

I managed to install ROS2 Eloquent on the turtlebot3 using the ros2 branch from ROBOTIS. However when i try to use this method --> https://zmk5.github.io/general/guide/... to add namespaces to all related topics. The expected output of ros2 topic list would be:

/robot1/battery_state
/robot1/cmd_vel
/robot1/imu
/robot1/joint_states
/robot1/magnetic_field
/robot1/odom
/robot1/parameter_events
/robot1/robot_description
/robot1/rosout
/robot1/scan
/robot1/sensor_state
/robot1/tf
/robot1/tf_static

However the actual output is:

/parameter_events
/robot1/battery_state
/robot1/cmd_vel
/robot1/imu
/robot1/joint_states
/robot1/magnetic_field
/robot1/odom
/robot1/parameter_events
/robot1/robot_description
/robot1/rosout
/robot1/scan
/robot1/sensor_state
/rosout
/tf
/tf_static

I am wondering why remapping topics is so hard in ROS2 and what steps I can take to solve this problem. My goal is to simply start up the robot.launch.py on the Turtlebot3 with a set namespace. So that when I load e.g. 5 Turtlebot3's with different namespaces they can all be monitored by a swarm controller (ultimate goal).

If you have any questions, please let me know.

Best regards, Edwin