Doesn't this just move the point of strain from the end of the connector to the end of the spring? I could be mistaken.

I haven’t had any issues with that. I think the major issues (at least with my wife) came from the fact that she usually disconnects by pulling the cable, and not the body of the connection. She still does this, but the spring covers about 2 inches of the cable and I haven’t had any frayed cables since I started doing this.