Like them or dislike them, some of the scientists in the climate field you can have some small respect for – not many, but there are still some genuine people. On the other hand, the discipline is badly tainted by the low-grade hangers-on, who do not have the intellect to understand the issues and therefore argue almost completely on an ad hominem level.
The problem with these people is that you are never going to win the argument – for two reasons. Firstly, they never engage and, secondly, they do not have the equipment to understand the argument anyway. And this is the measure of the climate debate. We have to win the wider argument, and leave these people beached like stranded whales.