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You shouldn't use this long term.
The cable strain relief (the ribbed part on the end) is nonfunctional because it is hard 3D printed plastic without any give, it's a very easy way to wear out your cable at that spot from the concentrated cable strain.
Could print it with TPU to resolve the strain.
I assumed this structure is printed as a hollow shell, with a rigid plastic, you can maintain a solid shape, which you can't do with a shell of a soft TPE material.
I've had multiple old charger cables fail at the same spot because of the lack of strain relief.
What could be done to make it viable long term is to print the main body with a rigid plastic to maintain structure and only print the strain relief with a soft TPE material, but that would involve a little bit more complexity and assembly.
You could design it so that you can print the strain relief part separately, but I think we are way overthinking this, as it's just a fun gag.