[ETS Official Practice Test] Help me understand why this question choice is wrong

Why is C wrong? Is the passage not all about the reasons why they were disagreeing about this issue?

I did not select D because I assumed status meant current status. In that case, sure D is better but C is still not wrong IMO.

Author spends time discussing the facts surrounding the different positions on the matter (not much emphasis on the reasons for them) and goes further to discuss the changing landscape regarding the matter

D is the better answer