The scientists and engineers aren't in leadership positions.
Those who are, always have other priorities. Like profits, like getting re-elected.
Because of our collective short-termism, we'll continue down the path to oblivion whilst saying to ourselves, "It's getting a bit warm, isn't it?" as our eyeballs catch fire
People know what needs to be done (mostly). People know that drastic action would be/is necessary. But they also see that drastic action (or much action at all) is simply nowhere to be seen. And people accept that. They just ignore it for the most case. We fully understand that we're not doing what is necessary. We just carry on regardless, collectively.
Humanity's collective motto could be, "I try not to worry about it."
Totally spot on. The people that could do something about climate change don't care because they have money to make and shareholders to please. So I guess we'll all go to hell whilst they screw every penny they can out of everywhere they can get it from.