I don't buy it simply because of the logistics.
For example, let's consider a relatively simply amp with six knobs: Gain, Bass, Mid, Treble, Presence, Master Volume. Now let's say we use a fairly coarse resolution and sample each knob at only 10 positions (1, 2, 3, ..., 10).
That's 1M possible combinations. 1 million!!!
Now let's assume that this so-called machine learning can learn the response in a mere 120 seconds which is extremely optimistic. That means it will take 120M seconds to learn all possible combinations of the controls.
120M seconds = 2M minutes = 33,333 hours = 1,388 days = 3.8 years.
Add a Depth knob and the time increases to 38 years.