A well-known researcher, who requested anonymity, said this in private communication:
On the claim that climate alarmism is due to research funding: this incentive exists in all science, yet it’s never occurred in the past. And there’s no evidence that it’s occurring here: there’s no way to dismiss the null hypothesis that scientists are worried because the data are worrying.
On the other hand, there is evidence that climate skeptics are truly working off an agenda. See Spencer’s statement “I view my job a little like a legislator, supported by the taxpayer, to protect the interests of the taxpayer and to minimize the role of government.” There’s no way that you can reach that conclusion by looking at data. It’s a pre-determined political goal.