[@Regitnui][@AllHollowsEve]

I think Amon's version of bending removal was kinda like a substitute for the real technique. Kinda of like a Fire bender being able to redirect lightning, but not being able to actually [i]produce[/i] their own lightning. Simulates the end result, but it's not the real deal.

As for technology, I believe that yes, they would be far more eco friendly. Would the Water Tribes be modernized by this point? In LoK, the most technologically advanced thing we saw in the Tribes were Unalaq's car and Varrick's ship. Would a sewage/piping system be in place for ease of access to water that doesn't take up as much space as waterways and aquaducts, as well as internal heating for houses? Or, perhaps would they have taken on a much more rural approach, as they are the two portals into the Spirit World. I feel like heating and transport systems would be the only real technological advancements made in the Tribes, as the Spirits definitely prefer the natural world to man's creations.