Is it irrational to follow the collective "one format to rule them all" dream? Sure, the codec itself needs work, but seeing how long we've been stuck with the JPEG/PNG/GIF trio (even with better encoders like mozjpeg/jpegli or optipng/zopfli) with TIFF as a catch-all backup, getting the format right once and for all really matters.
I'm still weirded by the low amount of workforce in libjxl/jxl-rs; sure, too many cooks do ruin the broth, but too few too, in that domain.