Originally a comment by Francis Boyle on Making everything worse.

The climate catastrophe deniers have long given up on any attempt to argue a case. They tried that long and hard but there’s only so many times you can use sleight of hand* as an argumentative technique. The Trump technique of more or less random abuse of anyone perceived to be less than 100% supportive of your grift is just so much more effective so everyone is doing it now.

*Favourite sleight of hand techniques that I have personally encountered, in most cases multiple times:

1. cite a scientific paper as demonstrating your point when the paper does no such thing. Indeed in many cases the paper is only tenuously related to the subject under the discussion – the important thing is that the title suggests that it might do what you say since the sucker is not actually intended to follow the link let alone do any reading

2. If 1. seems too much like hard work just make up a title and give it a non-working link to a reputable scientific publication. If someone bothers to follow the link they will hopefully just put it down to link rot or some sort of screw-up.

3. If you’re cashed up hire a PR agency to call itself an institute and have it put out a “report” saying whatever you want them to.

4. Lord Monckton. Just bloody Lord Monckton.