Hardly nonsense considering the speed of implementing new things far exceeds the research and attempts to scale back once harm has been identified. Private interests are far more powerful and well funded than the few scientists sounding alarms and attenpting to caution people. There were warnings about greenhouse gases causing climate change at least as far back as 1912, yet despite this the car and oil industries pushed forward against ethanol fuel, electric powered vehicles, public transportation, etc to spread and strengthen an automobile-centered norm of going about, which we take for granted as the way to get around and turning away from that is far more unlikely today than it would have been in 1912 if the science had been heeded and changes had been made. This is the norm of industries vs science, and it is present in almost every facet of our lives. Additionally, the issue with the ozone layer is still very much not a non-issue.