As George pointed out a HM tub is not a spa and a spout is not a system so you probably don't have to bond it.
On the other hand if a few feet of wire would make you feel better you could.
The AHJ who wants to make the 8ga bond part of grounding system is wrong, at least the way I understand the issue. Our AHJs don't even like to admit grounding current could flow to the pool, and that is exactly what will happen. That huge Ufer, full of water, out there is going to be the most effective electrode on the property.
Mine got bonded back to the panel with a #8 anyway simply because the spa and pool are bonded and the spa heater has an 8ga EGC along with the pool light #12, 4 pumps with their #12s and the incidental bonding of all the electrical that is attached to the screen cage which is part of "the grid".
I don't think you can have too much bonding.