Why is it that despite being totally discredited the ipcc still has any credibility.?

The reason for this is that "Global Warming" now called "Global Climate Change" is like a cult. Even if you could demonstrate that data was fraudulent, made up, changed...it would not matter. The cult following has an agenda to stop economic development in the West and transfer wealth to poor countries. It is really what Obama called "spread the wealth" in answering the plumber during his campaign. It is a Marxist agenda and one that opposes development utilizing fossil fuels, basically, the only fuel on earth utilized in any manufacturing and production. Obama and his left-wing EPA and appointments also believe in this religion. Facts do not matter. The truth is an inconvenient reality.