These men had a lot of health problems and they were checking to see how well they could even walk.
The point of TRT is to intervene when needed to maintain health and not wait until health is degraded. You cannot undo damage.
The BMI of these men was insane.
All they proved was that these older men did not benefit much from a low dose of androgel.
Some had diabetes and may have had associated nerve and organ damage.
Some of these men would have had untreated low thyroid function and we know how that can cap benefits.