Has the IPCC outlived its purpose?

Professor Judith Curry is the Chair of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology. In an interview with the  James Stafford the editor of Oilprice.com she has stated:
The IPCC might have outlived its usefulness. Lets see what the next assessment report comes up with.  But we are getting diminishing returns from these assessments, and they take up an enormous amount of scientists’ time.

She also questioned whether Co2 is a significant contributor to climate change.
Personally, I think we put the CO2 stabilization policy ‘cart’ way before the scientific horse. The UN treaty on dangerous climate change in 1992 was formulated and signed before we even had ‘discernible’ evidence of warming induced by CO2, as reported in 1995 by the IPCC second assessment report.  As a result of this, we have only been considering one policy option (CO2 stabilization), which in my opinion is not a robust policy option given the uncertainties in how much climate is changing in response to CO2.

Read the interview HERE and Judith Curry's blog Climate etc HERE