I want to preface this by saying that I understand that HookTheory is supposed to be a very accessible tool for the advanced music theorist and the beginning musician alike.
That being said, I believe that there should be some sort of role system in place to prevent extremely sub-par tabs or changes to preexisting tabs. I see this often, and usually from users who either have limited understanding of how to use the hookpad software itself, or who have very limited understanding of actual music theory.
Under a role system, the basic user who has just created an account would have the ability to browse all the tabs, and play with the hookpad software without publishing actual analyses as theorytabs.
Taking and passing a simple proficiency test pertaining to the use of the hookpad software could allow users to become “editors” or something to that effect. “Editors” would have the ability to make small changes, such as re-syncing a poorly synced YouTube video to a tab.
Taking and passing a slightly more in depth music theory proficiency test could award users with the role “Theorist” or again, something along those lines. “Theorists” would have complete access to edits, as well as publishing their own tabs of songs.
There is a reason why it is now much harder to make permanent edits to Wikipedia articles or to create your own. It makes for better, more reliable articles. I believe this would greatly increase the quality and reliability of the theorytabs going forward. It would limit the creation and editing of tabs to users who truly care about and are proficient in theory and analysis.