The planet's a warzone, and machines are constantly producing more units.

[YoRHa by comparison had numbered in the hundreds, expensive to produce for all that they were capable of, and the resources their bodies and black boxes demanded. There were certainly more Resistance androids, but even then, 9S knows that machines came in far greater numbers.

That's why units like him were necessary to begin with]

We try to reconstruct and preserve what we can, but it's not safe. Not until the war's over.

[Is it over now, with the launch of the Ark?]