People say crazy things about quantum mechanics too, but we keep building and programming microprocessors according to the science as we understand it. And they work!
Anthropogenic climate change affords itself to a wide variety of crazy statements because it arises from, and affects such a wide variety of human activities. Basically, there is no segment of the human population that will remain unaffected in some way--either directly, by sea level rise or shifts in fresh water, or indirectly, by all the people who are being directly affected.
Because it is physically real, it can't be ignored forever. I fear that the longer we go as a society without addressing it, the higher the general level of social anxiety will rise. That could go a bad way: more and more people seize upon conspiracy theories or tune out. I hope instead we find the collective will to face our fears and take action to address them. I hope that like starting a difficult and scary project, once we see signs of progress, it will become easier to conceive of further progress.