Yup, the system software was so late and so rushed that they couldn't get the software they wanted for launch ready in the timeframe needed for manufacturing.

Not a huge surprise to people paying attention to consoles. More and more games have been shipping in various states of brokenness for years. The last generation introduced online game updates, which has become an excuse to cut corners and fix it later. Just ship a day one patch and fuck you to anyone without a constant, fast internet connection to their console, they're statistically insignificant now.