Heard just this week that uutils apparently has 100% compatibility with the GNU coreutils (so more than musl aims for). That's good, if distros start shipping it then. It's not really something normal users would install themselves...
Oh, it said "By ~2026, it will be 100% compliant", which seems to just be an estimate based on the trend for how many tests they passed over the past years. My bad.
But yeah, probably still useful to get it onto real systems now to find any other remaining bugs.