Looking back, you seem to be right. I thought mlthoughts2018 was referring to a specific file format, or at least a specific library because (1) They made up that weird terminology "flatfile" which looks like product name instead of just saying "plain text file" ... I wonder why they did that? (2) They made claims about transactional integrity with a WAL-like log. Now I realise they were suggesting you homebrew that anew for each fresh project that needs to store data! The idea that this would be easier than just using SQLite's existing mechanisms is so bizarre it didn't even enter my head they could've meant that.