No, not at all. It’s a bit implied, there’s a few references to children only having a single sibling but it’s not a codified rule. Life largely went on as usual, but a lack of death and the benevolent god AI changed things up interestingly.

The three novels take place hundreds of years after the established of the new way of living, there’s interesting insights about the repercussions of a deathless society and what it changes for the more extreme ends of entertainment.