The coax connects in the demarc box on the side of the house into a grounding block that is connected to the GEC as it should be.
The mast though doesn’t have a wire attached. The manufacture does not call for one. Nor have I seen a second wire for the antenna itself in photos online.
In general, I have never seen a second wire on small satellite dishes either….
So does the mast/antenna need grounding or is the one in the demarc/grounding block sufficient?