I would remind people that BG3 has NO official support for mods at this time. So while breaking a mod system might suck, it was never promised to work in the first place.
This is entirely unproductive and besides the point. Nobody is asking Larian to support anything beyond the game they published - which currently includes an interface option that does not work. If they were making a decision to intentionally remove the ability to use or modify mods, that would be an entirely different issue. The issue at hand is that the base game does not work as clearly intended by its own developers.
