This is the best analogy I can think of.
Two people have buy the exact same make and model car from the same dealer, around the same time. Upon purchase the first person hears a rattle in the car and it's coming from the rear. The second person hears nothing. Does that invalidate the first persons concern? No of course not. However it also doesn't mean that the second persons experience is invalid or even that they don't have the same noise and have never noticed.
Maybe person 2 listens to their music really loud. Maybe person 2 just happened to buy a car that somehow doesn't have the same noise.
Either way neither experience is wrong and in the case of this device we know without a doubt there is something going on. At this point there isn't really any value from either side stating I have the noise or I don't have the noise. We know it's not related to your personal setup. All we can do is either investigate and post what our finding are or sit back, relax, and wait for the official response.