I don't see why my point is that hard to see: the "do one thing" part of the UNIX philosophy is a good ideal to aim for, even if often ignored in favour of a more convenient kitchen sink approach. I then just mentioned that a good majority of these useful Rust tools (I really like hyperfine and oxipng, for example) don't seem to care much about it.

Some example of that idea I use every day is https://codemadness.org/sfeed-simple-feed-parser.html, where feed parsing, serialization and visualization are completely separated in small orthogonal binaries with very few options. It could have been one fat "sfeed" or something like its newsboat instead. (shilling it a bit more there: https://world-playground-deceit.net/blog/2024/10/sfeed-setup...)