Not to get all “orientalism” but celebrity scandal is a pretty big deal in Japan and South Korea. It can kill a career quite easy, for (by US standards) innocuous things. Smoking pot, spicy selfies, having a significant other - it’s not uncommon.
Japan at least is also fairly receptive to artificial spokespeople, like mascots and avatars. Maybe there’s simply higher demand for this, and turning to AI is a good strategy. (I’m personally bothered by it.)