Personally, they should have got rid of /usr instead of merge everything into it - that is, flat /.
Mount-wise /usr is more practical than having bunch of separate /stuff. It’s easier to keep it read-only. It’s easier to overmount it if needed. It’s easier to mount it remotely.
It will be interesting to see if any of the BSD’s follow suit with their own attempts to cleanup hier.
Not in this decade. :)
I suppose it could remain a differentiator, if nothing else. ;)
“Recapture that timeless feel of classical Unix filesystem organization! Use BSD today!”
I can see the benefit of Debian doing this (and IIRC Solaris had something similar with certain directories, eg, /lib being a symlink to /usr/lib), but for me it’s another sign of Linux moving further and further away from classic Unix. Yes, progress means that sacred cows need to be challenged, but I sometimes wonder where it’ll end.