The figure has been publicly challenged, but not by scientists (TIA)

Completely wrong.
You mean you have not read the critique in SCIENCE? You have not read about the influence of "main street bias"? You have not read that sampling was mainly restricted to urban areas? You have not read that sampling was not equally distributed across the country, drawing less samples from the quiet Kurdish areas than they should have in proportion to the population there?

The figure has been challenged publicly by scientists. You may not agree with the critique, that's alright, but you should not state as a fact what is plainly wrong.

Wolfgang