TST is pretty simple to use and extensible if you want more. What you did was... not really practical. Have you tried using TST for a few days? I promise you won't be able to go back to any other way of browsing.
Oh, that sounds very much like BS. "non tech saavy" users have been using hierarchies in computers since before Windows 95 (considering people that used MS-DOS as 'tech saavy' users). DOS/Windows folders were presented in a structure; File Explorer presented stuff in a structure manner. Hell, the "my documents" folder was structured... and even Gnome (the epithome of doing simple interfaces) presents folders in a structure manner.
If your computing experience is limited to iOS for example, chances are you'll never even have seen a nested tree view control, much less understand the hierarchy behind it.
At least just read a minimum on usability and UX, before being so rude as to "call bullshit" based on your own personal opinion.