Present levels of environmental degradation due to human actions far exceed Earth's capacity to self-heal.
People struggle with judging that, after all, at best you get a bunch of numbers and the claim, they would show this (or not). Without actual scientific background, what are you supposed to do?
Human society is based on trust. You depend on "experts" on a given subject to give truthful accounts of things. When you don't have that, society breaks down sooner or later: nobody adapts anymore to reality.
That's where we're at.