What is the audio use case here?
The confusion of connectors/standards that are combining Thunderbolt and USB 3.1 Gen 2 (lol) into a single cable that is already being replaced. Combined with manufacturers being well aware how short lived and narrowly implemented USB C (in all versions and Generations) in its current form is and will remain. Resulted in a very small amount of cables being made in typical lengths. Much less in longer x' runs.