At the least, the ClimateGate letters contain the refusal of a lawful FOIA request due to the requestor's political beliefs and a conspiracy to get others to do the same. The emails are out there. You can read them instead of the output of the True Believers' spin factory if you so choose.
None of that has anything to do with the science or the validity of it; you're bickering over whether the appropriate red tape was followed in the political process... who fucking cares, they didn't do anything unethical and nothing that was done or shown showed any of the science to be incorrect so using the incident to somehow doubt climate change makes zero sense.