You're right, they have been. However, BG3 isn't actually being released in Japan. If you search the playstation storefront, for example, the game doesn't show up at all. I intend to play this on PC, so I'm hoping it wont be an issue. Other games like Dead Space Remake (which were outright banned here) are available to buy on my Japanese Steam account, so I'm assuming that means BG3 hasn't had to go through any censorship. However, this is all just speculation right now. Would love to have an official response.