Alright, this thread doesn't exactly make up for the fact that I won't get to watch this movie as soon as originally planned thanks to the pandemic - but I still enjoyed the chuckles. Thanks guys!
Personally I liked the mechanical voice changer - makes more sense for a guy who can afford the tech, needs to hide his voice, and doesn't want to go hoarse from talking like the Cookie Monster. Although even Cookie Monster is better than the takes that didn't bother to change their Batman voice sufficiently from their Bruce Wayne voice.