If you're literally only using it to carry DP? I suppose. If you're actually using it as a docking cable and you're expecting it to carry usb, video, and power then I think you might have really unreasonable expectations of what it takes to carry all that in one cable and how cheap that's ever likely to be.
I don't think that's really accurate. A passive low bandwidth tb3 cable is basically just a usb3 cable with a defined set of capabilities and a certification. OP wanted power and video, that's what a tb3 cable provides.
