Ethics in Patagonia are still being defined and will continue to evolve. When Gullich decided to go to Patagonia and establish a route using the light and fast techniques like those of Yosemite, he was laughed at by the established community of climbers who frequented Patagonia.
From what I remember of the time, yes, I was climbing then too, Messner more or less laughed at Gullich for moving the climbing in Patagonia ina new direction.
Today, the techniques of Yosemite are the norm in Patagonia, light and fast.
Bolts have been a reality on new routes there for long time. I think a rap bolted line of bolts placed to free climb a route is much more ethical than a bolt ladder to conquer the mountain.
Again, this is a new route with no cracks, no worries.
Some idiots are just scared of progress and resort to "That's the way we've always done it" attitude.