Yeah but in every thread about SQLite many mention the fear of having to migrate to postgres as they reach some quantity of concurrent users (web apps), a bench

Yeah but in every thread about SQLite many mention the fear of having to migrate to postgres as they reach some quantity of concurrent users (web apps), a benchmark would calm these fears for some. (edited my original comment). Most won't go through the trouble to see if SQLite is good enough, they'll just go with the safe choice.