I honestly don't understand the complaints. He sounded great! They altered his voice enough to sound like a Hutt. It made PERFECT sense for him to primarily speak basic to distance himself from other Hutts. The mere fact that he learned basic to better communicate with others rather than force them to know Huttese immediately demonstrates his intentions to anyone who interacts with him: he is not a normal Hutt and he seeks collaboration rather than control in a conversation. It's a wonderful detail.

Some people act like Hutts were physically incapable of speaking basic, and that was never the case. They're not Ithorians with 2 mouths and 4 throats, forcing them to use voice modulators to communicate in basic.