I understand that (based on one of your answers elsewhere), but I believe this is still a separate bug/issue to that.
If it was disabled in BTT, but the finder extension is still enabled, I would expect the finder menu to show the default 'you need to go create an entry' menu item; not continue to show the menu item I have disabled.
It's not working by default because the finder extension is basically a separate app and just reads the menu configuration from BTT. But I'll add some way to read the disabled state as well.