What is the benefit of leaning to the right and to the left during the adhan when microphones are present?

The questioner : If you would allow me, the leaning to the right or to the left during the adhan was in order to make the voice heard to the right and to the left. But now the microphone determines it, so if he leans this way, it has no effect. So it can be asked: what is the benefit here?

The Shaykh : You are... going against the Sunnah.

The questioner : Shaykh, he says that the text did not give a cause ('illah), but rather it is a Sunnah. What does he want to convey...?

The Shaykh : ...And then, if the cause were making the sound heard, it would be necessary to do what the mu'adhdhins in some countries do: they go around the minaret, meaning they divide the adhan around the circle of the minaret, until the matter reaches the point where he faces the Ka'bah, then turns his back to it, then faces the north, meaning he wants to make it heard in all directions.

The questioner : And some people would repeat one part, and some people would repeat the second part.