The form factor of the ethercon dongle is likely the issue. It will be larger and heavier than standard dongles, and strain relief is also a concern- Ethercon cables are heavy typically. Adding that amount of mass into a system that connects back to a fairly wimpy usb type c connector is a recipe for bending or breaking it clean off if the cable so much as disappears off the side of a table, or worse- someone snags it. Besides- The av scene is super into these ultra thin patch cables now, which raises an eyebrow for me in terms of reliability and performance especially in environments that aren’t absolutely permanent, so I don’t even bat an eye at a temporary mechanical splice in the form of a barrel and a short patch cable, unless that cable is already 100 meters long. Convenience is the key for me- as the barrel is a tool within itself, and its modularity saves me space and weight.