I'd say not similar methods. Koch Industires/1980s Conservatives spreading propaganda to limit any increase in govt (i.e. more regulation would be passed) lead

I'd say not similar methods. Koch Industires/1980s Conservatives spreading propaganda to limit any increase in govt (i.e. more regulation would be passed) lead to climate deniers. Anti-Vax discord was recently aided by Russian disinformation on social media. And flat-earth theories are another form of Christian science or Creationism by and large.