1. Constant crying wolf about climate change. I've been told we're "10 years away from climate catostrophe" since I was a kid in the 90s. But this time it's really about to happen, right?
2. There's people who agree with you that global warming is a serious threat, but refuse to be "economical cuckolds" by sacrificing their economical safety, while countries that pollute far more are given breaks. The argument is why should they, as members of the western middle and working class, be the ones to sacrifice and suffer while the Chinese and Indians don't have to? All because decades ago the elites of their country profited off industrialisation? The same elites that keep screwing them over?
"Oh but the Indians don't produce as much CO2 per capita" so? They would if they could. The average Indian makes almost zero conscious decisions to be environmentally-friendly compared to a westerner. As globalisation keeps making the western worker poorer and the rest of the world wealthier, so will the Indians' CO2 production rise.
And the only reason CO2 per capita is lower is because those countries left their population growth completely unchecked. You're asking western people who can't even afford to have a kid to sacrifice while those on the other end of the world don't have to.
3. RE Greta, people see Greta Thunberg as the typical propaganda mascot of the elites: privileged, pretentious, attention-seeking Twitterati nepobaby who only seems to call out westerners, even though westerners make more conscious environmental choices than any other demographic. People have seen this playbook many times before, she's just a newer model on the assemblyline of insufferable leftists that the average person changes the channel as soon as their mug is on the screen.