The author seems to be faulting reason and science for the inequities in society. That makes as much sense as faulting fire for arson.
There were inequities in society long before the 'age of reason.' In fact, one can argue that western society has become more egalitarian since the 18th century and it's 'enlightenment' and in the ensuing 'scientific' generations. Why has he left this out of his commentary?
The fault lies not with reason or with science, but with human choices. He gets close to saying so, but leaves it implicit. The question is not about what tool one uses (ie, 'reason,' versus 'caring') but with the user.
I also question his statistics. I thought world population was about 6 billion. From where is he getting this 'trillions' number?
Never linger too long with the ignorant,
throw stones at their talk.
Walk only with the lovers,
the mirror of the soul gets rusty when
dipped in muddy water.