The Economist points out another flaw in the 'morality' argument with regards to the salary. The implication of justifying high salary for the ministers with the point about attracting top talents and preventing corruption is that it seem to suggest that anything less would mean less able and virtuous state leaders, which obviously isn't the case.
My take on the whole issue has little to say about whether the adjustments are fair or if prevailing salaries are acceptable. And the point of bringing up the article from the Economist is to demonstrate the problem of the argument used.
So if white shirts turns yellow when you buy the cheaper ones, why don't we get other colours instead? Perhaps some day, people would find out that they can do fine with inexpensive light blue tee and just abandon the white ones.