There is a legitimate point that some programmers might misuse format strings and that by using named capturing in the format string, this misuse would be sligh

There is a legitimate point that some programmers might misuse format strings and that by using named capturing in the format string, this misuse would be slightly more ergonomic. Nevertheless, legitimate uses of format strings also become more ergonomic, and legitimate uses would seem to far out-strip illegitimate uses. Furthermore, within the Rust ecosystem, the tools to build SQL queries, or serialize/deserialize JSON generally provide interfaces that are more ergonomic than manually using format strings, so a programmer has little incentive to do so as it would constitute more work on their part.