Same here. I work from home and often enough have a 2-year old wander into my office. Talk about random interruptions. But I don't notice skipping more than a beat.

Maybe it's because I don't tend to work with really bad codebases that force me to keep huge mental models in my head while I'm making changes. Or perhaps I'm fast at getting ideas onto paper so that the stuff I need to keep in memory remains small. Either way, the dynamic the article describes is not an absolute, universal thing. There are environmental / behavioral factors at work besides "Developer, Interrupted."