I'm not qualified in any sense to speculate, and so that's exactly what I'm going to do.
My first thought is that there is a configuration happening to bring it home which we already knew, and there is a bug or test tone that was activated and since no one writing the code is there, they just didn't notice it is still running.
Feels like it doesn't it? I enjoyed taking apart and fixing the family computer as a kid but it was also out of necessity. If it wasn't me? Then who else would or could?
I'm still trying to decide if it's a "when I was a kid I used to clean my own carburetor" situation. Like, is it a "back in my day men were men and we fixed our computers by hand", or more so, there's just not a need to dig into computers unless you enjoy it like any other hobby.