Okay, so developing a "multi channel audio support" feature took three months. Is that expensive? What would this type of feature cost to implement without software? Answer: a LOT or even borderline impossible.
Look, to a large degree software like this replaces what used to have to be done by electronics (or, more likely, not at all). The fact that it took three months is a borderline miracle. Oh, you want to make this process faster? Okay -- time to get the AI community involved because I don't really see how human beings are going to perform any faster than they already are.
Look, my point is that anyone who claims that this could be done faster or is the result of "bad engineers" or anything else is basically delusional IMHO. 'Nuff said.