Earlier quoted context omitted.
If the mic is on the BOM it's not disabled. It's just not being currently used. Maybe.
Right. If it's ended up on a production board that means one of two things. 1. They intend to use the microphone in the future 2. They disabled the microphone after having the boards manafactured right before shipping - what changed? If they knew they weren't going to use it, why didn't they leave the microphone unpopulated? It would save on their BOM cost too, there had to be a reason.
So yes they planned to use the microphone in the future, to do precisely what they have done here.