The author is wrong, and a software factory isn't a distraction.
People are thinking about this from a quantity angle, but the key is quality, and achieving a self-maintaining project at home. I built a distributed trading system that runs multiple strategies in US options and MUST be correct. So my goal wasn't to build huge quantities of software and pump out garbage, but to ensure correct behavior and proper fixes in the codebase with agents.
Open sourced my methodology: https://github.com/pullboard-dev/pullboard
That's just a non-sequitor though - "this isn't a distraction because I built a thing" isn't actually an argument from anything but personal satisfaction.