If your wire is thin enough, you can also pull up the cup holder and route the cable through there. That is what I did for my Blackvue, but I'm going to be removing that and running a 12V splitter to the console, so may not be able to route the cable through the same area.
Neat trick! I was wondering if there was a slicker way to do this. So to get power to the front (i.e. for a powered hub) just need a way to get into the front compartment without cutting things up terribly. I wonder if there is a similar gap or perhaps you could slightly modify the front compartment's light to open a gap along an edge for the wire to come out.
One thing I have considered is simply finding the appropriate connectors to go from the car's internal USB wiring to regular USB, and back again, to insert a powered hub between the MCU and the front ports, and run the front AND rear ports off of said hub, then perhaps use the trick you discovered to run a couple of extra ports (perhaps in a 3D printed housing to keep them from sliding around) as well.
Similarly, find appropriate connectors to T off (without splicing, using connectors) 12V power from the back of the 12V outlet to run to other things (dashcam, powered hub, whatever). Of course can just get 12V power from the unused 'HITCH' 12V source in VCLeft ...
If the hidden powered hub can be done then together with 12V off the back of the 12V outlet and your cable routing trick then shouldn't actually need to cut anything anywhere.