So, this is wiretapping at a mass scale. Just how many crimes do the executive class occur before they get turned into the past-tense... The executed class?
I am for a corporate death penalty. Companies that engage in such mass criminal activities do not deserve to exist.
There's plenty good reasons to have microphones in products. The simple obvious one is voice control. Legality and illegality all depends how it's used and controlled. And the company is controlling this remotely.
And your rank and file engineer or software dev is going to have low/no understanding of the subterfuge and illegality that the Executive class puts together as a final product. The features are possible, but the labor only knows their pieces. Executives are the ones selling illegally gotten data to "their 500 sponsors".
The rank-and-file do follow marching orders, but let us not pretend they are all innocent sheep who could not envision the true intentions of the design. "I just thought it would be a neat thing if all sounds in a room were recorded and uploaded to Samsung servers without bothering the end user!"