Good question, but yes, he did. Their main issue with spreadsheets was the lack of roles and permissions. The tool makes it easy to allocate fridge space to users, which in turn makes it easier for the users to keep track of things. Also, users can't touch other users' stuff.

Also, the data per fridge cell itself is more complex than what fits in a spreadsheet row.

All this adds up to a much more user-friendly (and manager-friendly) experience, which leads to higher uptake among users and ultimately cleaner data.