This is great information, thank you for posting!

I think there is a line between security, and keeping a device useful in the long term. I think the threat of people installing listening malware on the car via an evil-maid type attack is low.

However, when these cars are 10+ years old, and are in the hands of those willing to tinker, I think the ability to open up the software and customize will be a great thing. Hopefully communities form around creating modifications they find useful, and prolongs the life of the devices.

Seems much better than the end-users ripping out the factory head unit to install the Aliexpress "Android Tablet" style units, which likely have much worse security and engineering than the Honda units they'd be replacing.