Yes Matilda, there IS such a thing as an OS being too ridiculously secure!

As was said:

Things for which adjustments are needed - but which I cannot adjust AT ALL ;
Being an admin user is NOT enough;
Acting as superuser is also NOT enough;
In fact, well documented functions like changing ownership and/or perms via sudo are even blocked !!

A fine example is posted here:

(Clearer hopefully, for anyone who griped about my 'rant' ?!?)

Goal:
For the user to basically be able to do ANYTHING - totally like root, but as user - without having to log in as root.