What I see is that I do not have to give the full path to run the command with sudo, but maybe that's because I have the full path to the command already in my /etc/sudoers.d/usercommands. So for me, there's no change. Tested this in freia with the version of sudo mentioned above.

Not the way I use it, mostly thanks to my learning about it when on PCLinuxOS.
One of the main admins was quite adamant about it.
See: https://pclosmag.com/html/Issues/201205/page11.html

But yes, I agree that a great many people use it in the wrong way.
Mainly thanks to the Ubuntu distribution.

I am, of course, also interested in the implications of the announced change.

Best,

A.

It is not even meant for the purpose it's being used by most Linux distros, sudo is meant to give limited access to specific commands as root or other restricted user to specific users on a multi-user system, not as a "run everything you want as root" tool on a single user desktop/laptop system.

We have to thank Ubuntu for introducing this misuse of sudo on Linux.

have not fully understood the implicatoins of change, but suppose it is a benevolent, sensible change.