Unless someone is profiting from mods, which at least right now is definitely not the case, I don't see how this hurts Larian or WOTC. The opposite is true. People actually making changes to the game that Larian can't or won't do, and thus improving it for people who wish it. It's a win win situation

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."