The best meditators tell you that you do not need commentary to meditate.
Except, when I don’t.
It is quite understandable that when your brain is performing at its best, it does not need commentary.
However, if it is surrounded by loads of noise (real and virtual) from outside, it is never wrong to pick up commentary.
As you gain mastery, the need for commentary reduces.
The goal of meditation is to calm your self, not to repeat the uncalm version during the time you had set apart for meditation.