It only took two days for someone to unlock a developer mode in Baldur's Gate 3's modding tools, opening up the possibility of custom levels and campaigns
It's early days yet, but my mind boggles at the possibilities.
Everything I know about Larian tells me that they did not try very hard to hide it. They had to for liability and contractual obligations, I am sure, but they didn't try very hard to hide it.
Oh yeah, I have no doubt that Larian saw no need to block that feature but had their hand forced, they always were extremely modding friendly and welcoming of player made content
Larian has always supported modding and D:OS 2 included a GM Tool, but BG3 belongs to WotC/Hasbro which likely limits what Larian can allow players to do, officially. My assessment comes from many years of watching how Swen and Larian treats players and how WotC/Hasbro treats players. But, if you enjoy snarky cynicism, I am not going to piss on your birthday cake.
IF you're correct, then hasbro would just force them to fix it, and it'd become a never ending game of whack a mole, where probably every update has to break existing mods based on the hack to further disuade people.