It works, but it's poorly thought out, why? When you activate the list it shouldn't be specific words, deactivate them, but allow posters to be edited with specific words instead of deactivating the editing of only those, since if you have poster plugins you will have to be placing them one by one, and if it were just about allowing and denying all the others, it changes.
This plugin prevents Skript (and possibly more plugins?) from detecting any right-click on signs in general. Wouldn't a better way to do this be to just automatically honeycomb a sign upon placement? It would disable editing the sign with right-click while still allowing plugins to detect you right-clicking the sign