His non-academic work is an unbroken continuation/extension of work he started as an undergraduate student writing about productivity for students before he was

His non-academic work is an unbroken continuation/extension of work he started as an undergraduate student writing about productivity for students before he was ever a researcher. Your comment reads like he was just another researcher searching for gigs to supplement a meager academic income instead of being a human being with more interests than just his primary line of work.