One problem now, is that if Global Warming is ever conclusively demonstrated to be false (by, for example, global temperatures starting a declining trend), then all the hysterical supporters will look like complete idiots. This means that they will have an incentive to double down and suppress any contrary evidence.
“if Global Warming is ever conclusively demonstrated to be false”
That cannot happen, because a testable, falsifiable presentation of Global Warming theory has not been made. In other words, the proponents don’t say “if such and such happens, the theory is false”. That means, of course, that the predictions of the theory are not useful, except perhaps to extract wealth from and exact control upon people.