Disclaimer to start with here:
U/M is 100% absolutely my choice for favourite Linux distro with zero competition IMO.
That having been said...
What I have been fighting with MAY be a -Linux- problem generally, or an Ubuntu problem generally and perhaps NOT specific to U/M - but since that is what I've been using exclusively for some years, that is what I focus upon.
The OS is protecting me from...ME !!!
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 !!
This ranges someplace between ridiculous and utterly absurd and brings to mind a company whose flagship product is a 'perfect 10' when it comes to being lobotomized & utterly gutting the user's control over their own PC.
A possibly goofy comparison:
If/when I boot into my wonderfully convenient ISO of Parted Magic via Ventoy & USB - I have unrestricted access to ABSOLUTELY EVERYTHING !!!
This type of full, unrestricted access should somehow be possible to me and/or anyone else on their OWN PC & daily driver OS as well - but it is NOT available AFAIK !?!
If such a method can be enabled - then please - will someone show me where to find that info ??
This is MY PC & it is for MY usages ONLY - so if I screw it up - that is on ME - and this idea applies to anyone, really.
If they CHOOSE to have such unrestricted access - then screw it up, then THEY get to fix it too.
Otherwise this is like being able to obtain a car quite legally such that it is YOURS - getting in, starting it up - but then NOT being allowed to drive it...
A truly absurd situation - and yes - I know there are self-driving cars now, and even when they don't screw up they DO have a manual override.
Our OS of choice NEEDS also to have a full, manual override.