I was thinking about FoC Grimlock today and I understand that his speech mannerisms are a result of Shockwave damaging his systems while experimenting on him and giving him his raging dinosaur mode. His speech mannerisms are a mental problem that prevent him from communicating properly. Transformers are as much complex and corruptable individuals as we are. There are some wounds that are not physical wounds that take time to fix, or just can never be fixed. While I doubt that much thought was put into 'Bee's character, it's an explanation for his shitty radio voice that doesn't make me cringe and makes that one idiotic flaw of the movies a little bit less obnoxious to me.