However, barring individuals from choosing to use currency and dispensing all "abundant" goods through a central computer is far from a favourable situation.
Agreed. Nobody has proposed such nonsense (read what I wrote earlier).
[...] suggest that this value would be trained into them through "scientific education." In this, I see TZM's methods as being no different from those used by countless totalitarian regimes in the 20th century
You misinterpreted. It is a simple recognition of the fact that as education rises, the natural consequence is decline in population, we see that in every civilised country. It is by no means a value imposed, nor would anyone be compelled not to have children (as it happens in totalitarian regimes like China).
What Joseph referred to was his own view of life, he said that,
for him, it would be irresponsible to bring a child on this planet without thinking of the consequences, he didn't say people shouldn't have children.