Lille's speech was not that of a fugitive on the run, but rather of a highly threatening monarch of a great power.
The words were entirely effective—
Mainly because his stance was quite convincing.
Even if Atlas has already provided a large number of people with prosthetics almost indistinguishable from native limbs, or even superior in performance, the acceptance of large-scale augmentation still faces resistance among normal people.
This resistance persists even in a Cyberpunk World where prosthetics have been in vogue for a century:
People do not understand prosthetics, do not understand brain-computer interfaces, and tremble under the shadows of conspiracy theories and war. Normal people would not choose to replace their limbs unless forced by life circumstances.
As for those prosthetics proven to be genuinely beneficial, ordinary people also have no chance to choose.
