NTFS confusion: basic permissions not working

I came across a forum post at superuser dot com. The poster nailed the question perfectly. The answers, I'm still reading through. They are god-awfully wordy and circular but I'm sort of getting the picture here, something along the lines of: simply being in the Administrators group does not make life easy. You have to be the Administrator user (disabled by default) to bypass all the hassles of UAC or whatever. I still don't have a solid understanding of this, but, at least it tells me my problems will just be restricted to me, the logged-in admin trying to set up these folders. The users themselves will experience things based on the permissions I set, same as has been the way for years in all versions of Windows, basically. I'll have to test this out, but my main concern is alleviated, that users willbe hassled about folder access constantly, despite being given permissions.

I'm still keen to hear from anyone that can give insight on all this though. Here's the link I menbtioned:

https://superuser.com/questions/1006655/file-permissions-administrators-full-control-why-isnt-it-always-sufficient