The BBC's Habit of So-Calling

In a BBC story relating the circumstances of the murder of a British citizen in Jerusalem by stabbing, the location of the crime is given as:

from the Western Wall (the so-called Wailing Wall) along a shopping street

.

Why "so-called"?

It would have been better to write "also known as..."
although just calling it the Western Wall would have been sufficient.

Let's see, is it to be also "Haram E-Sharif, so-called Temple Mount"?
Or better, "Temple Mount, so-called Haram E-Sharif"?

Maybe then for balance, the BBC should start writing that the Arabs live in a country "so-called Palestine"? Would their Arab listners appreciate that?