There is a reason for USB-C extensions not to be part of the standard. They can be bothersome in the best case and dangerous in the worst.
There is a reason for USB-C extensions not to be part of the standard. They can be bothersome in the best case and dangerous in the worst.
That’s not an extension cable, but an adapter, thus it’s not a problem in this case. It’s a cable that can convert the data from an audio jack to something that can go through USB-C, not a cable that simply extends a USB-C cable. The cable can almost certainly handle any amount of power and data that an audio jack would pass through it, no problem, even if it were a USB-C to USB-C extension cable, and not an adapter.
The problem arises when someone tries using a higher-spec USB-C cable with a lower-spec USB-C extension cable, such as using a 240W charger with the lower-spec USB-C extension cable in the middle that can only do 120W. In that case, it would pass more electricity through than the lower-spec cable could handle, and it would overheat.
The amount of data and power from an audio jack is simply too small to overwhelm practically any USB-C cable or adapter that exists, thus it’s not an issue.