It seems that almost every technological development will cause us to become "weak as a species," for the simple reason that these developments remove difficulties we have faced in the past.
Cars and bicycles damaged our endurance. Shoes softened our soles. If these technologies disappeared overnight, yes we would be worse off as a species, but that says nothing about the benefits of these technologies.
If these technologies improve our mental effectiveness, even if only within a specific type of sensory stimulation, it's likely that we would adapt our sensory perceptions to deliver these "optimized states," possibly through new technology, for an overall net gain in efficacy.
Cars and bicycles damaged our endurance. Shoes softened our soles. If these technologies disappeared overnight, yes we would be worse off as a species, but that says nothing about the benefits of these technologies.
If these technologies improve our mental effectiveness, even if only within a specific type of sensory stimulation, it's likely that we would adapt our sensory perceptions to deliver these "optimized states," possibly through new technology, for an overall net gain in efficacy.