Apple's approach to security
If your country manor (a metaphor for macOS) is designed by Apple there will be a fence around the garden. Not really for security - just to prevent anyone from walking in, vaccinated or not, even with a written invitation. The main gate - but not necessarily the access road - may move from time to time to the other side, but that's just to confuse anyone trying to reach the garden (which is not on Google Maps - no documentation - and the locals in the neighbouring village are as likely as not to remember where the main gate was the last time they visited and wrote a blog post about the experience).
There are forbidden sections in the garden and in the house itself, even for family members - they can only access parts of their own property if they put on very special Apple-branded shoes ("Full Disk Access", anyone? You can't just open a Terminal and ls(1) in certain directories, such as your own Mail or Downloads folders, even if you are admin, though you can see the contents in Finder). Mind you, some of the staff are required to wear those special shoes even though they never need to access the grounds at all (seems like a security hole to me, but apparently not to the architects).
The garbage bin ("Trash") will trigger an alarm if you try to retrieve family silverware thrown out by mistake or to arm a bomb in it while wearing special branded shoes (can't double-click on an executable in Finder), but with any other footwear there is no problem (you can execute binaries in Trash, e.g., from a shell - just not from Finder).
If you find a hole in the fence you can walk around the property unrestricted, and the code to the safe with the family jewels is on a Post-It note on the safe's door. Finding a hole may not be trivial, but if you (or some Aussies, as the case may be) do there will be no other obstacles - the jewellery will be yours for the taking.
Etc., etc. Dunno about iOS - judging by the article, the principles are the same.
[AC because developing enterprise security tools for macOS are among my responsibilities - not at Apple, but as putting my employer in El Reg's position will not be terribly professional I am using every layer of obscurity available, consistent with Apple's security principles... This part of my job is not fun at all, and it's not even funny. The cynic in me would just leave those Apple-designed houses unprotected, but our paying customers manage many "properties" of all kinds and insist that everything should be covered.]