I know of no 'climate denier' who thinks that the earth is flat. 'Flat Earth' is a psy-op developed specifically to associate with people who don't go along with the corp/gov line on such things as 'global warming', 'vaccines', etc.
Ahahahahahahahahahahaahahaha.
Global warming deniers == vaccines deniers. It's your words, are you?
I have one interesting thought in my mind: If some people denies the fact of global warming which is not denied by any famous scientists, why in that case they must believe to that scientists in terms of vaccines or shape of Earth?
If scientists corrupted - they lying about everything else (is this not obvious?). So, if you denies climate change than you in the "ark" with vaccine deniers, conspiracy theorists, flat earth sect and others who fighting with deep state goverment and reptilians.
About global warming: This is real, you can check it by yourself, just take a look to average temperature in your region twenty years ago, forty years ago and in the past century.
But difference is about which leads to this: sun activity or human activity (in real - all both affects).
Of course, representation of global warming in media is often weird, but it not denies the fact of the problem.