We once read a book called "Feed" in high school - a ham fisted anti-capitalist book. Wherein citizens are 100% connected to an internet like service that only exists to sell them products. 90% of the class couldnt get it. Even when the teacher sat down and explained the entire plot of the book they still couldnt wrap their head around it.
How much did he pay to get that story buried? Or did the patriarchy do it for free as a favor to a marginally useful entertainer? This information ruins something I love, so the chances of this being slander are near zero.
This is pre internet, so I think they just moved and pretended that it had never happened. That was enough back then. You don’t have to let it ruin the Belgariad for you since he is long dead and cannot benefit from you reading/enjoying/buying his books any more.
What I tried rereading was the Elleniad, his more grimdark work with a more mature, more self inserted main character. Sparhawk is very, very, very problematic in every way, but as far as I remember Belgarion was not a child groomer and hardly spent a chapter talking about the horrors of race mixing, so those books are probably more ok!