That mistake was made years ago when Australia specifically created a much more in-depth BB character that’s become synonymous with the show. Back then producers were doing the voice (Nick, for example, was a producer and his deputies were control room producers) and I assume in an effort to keep building on it we got Leon starting in 08 specifically because he was an up and coming voice over artist.
As Kingston said, it’s all coming up the chain. I’m sure Pete has an idea about how he personally would play the role but is ultimately out ranked. It’s still better than the creepy HAL9000 voice used in the previous iteration.