As far as I know the only censorship that was done to the game was the sexual content for release in the Japanese market.
Could also be 'don't do that because 8% of our target market wouldn't like it' during early development or in non public versions. Or silly image stuff like car manufacturers not allowing their licensed cars to show damage in racing games.
Last one is blatantly obvious, the first one, you'll never know about it because it was internal.
But I still move that makes BG 3 "not indie".
BG3 is indie because they financed the game with money they raised themselves and self-published. It's that simple.