I’m very surprised to find that the PORSCHE PCM isn’t just a reskinned version of the software found in VW/Audi/Bentley etc like the all rest of the brands (that have reliable systems). Even more surprised to find how buggy it is.
Thieves who have the tools and sophistication required to do this already have the publicly available workshop manuals that give them all the info they need.
I doubt very much they pay attention to a forum where 50% of the users don’t even know how to work the stereo properly.
On the Taycan, they’d be able to access CAN wiring from just behind the wheel arch liner. All they’d need to do is slice it open at the bottom outside corner where the connector for the main front bumper wiring loom is located.