You also can't say that it is the leading source of climate change. It almost certainly is a major contributor based on the leading science, but you can't say global warming isn't bad for the long term well being of the planet or humanity, its an unfounded claim and the vast majority of climate change models have been extremely innacurate.

There are so many contributing variables, its like trying to predict the stock market, but you've gotta wait 100 years instead of a couple days to see if your model is correct, then you habe to refine your model and retest. We only have ONE sample to study or test, that's an insanely limited dataset. Imagine if we only had one person to study for medicine, how fast would it advance?

The popular claims about climate change science aren't even supported by the science, they're just myths and untested hypotheses floating around culture. People believe them because of tribalist peer pressure, "because science", because everyone wants to be perceived as smart, no one wants to be insulted.

It IS a propaganda tribalist movement, just look at the attacks on people who are so called "climate change deniers".

That's what happens when you collude with government. Churches, corporations, or science. Things get politicized, things get corrupted, it turns into propaganda to get a politician elected. The politician on the committee holding your paycheck over your head, favors get traded. The slightest bias for political favor is compounded over time, but when it grows big enough to notice, the corrupt have to admit their error, or pretend its not an error. Most people are good people, or they think they are, they try to be. The cognitive dissonance of the error and minor justifications obfuscate the obvious until they are blind. It happens in every context of human life, I might be doing it right now.

That's why when you see people attacking someone for having a different idea, voicing a different opinion, or just asking questions, that's cultural tribalism, its not rational, its not scientific, its very unlikely to be correct. Correct ideas are easily defensible, people who are willing to talk calm and civil, without acting perpetually irritated, those are usually the people who believe they are right, they're trying to be intellectually honest.