I don’t think scientists tend to be as confident as you suggest. But look, in my lifetime we have been told of the dangers of tobacco, smog, acid rain and to the ozone. We changed laws, regulations, and behavior to deal with those. In each case there were skeptics or deniers of the problem. For all I know the acid rain and ozone things were not true or exaggerated. But the air in LA seems cleaner, fewer people smoke and I think lakes in the northeast are in better health.
I read a while ago that the skeptical part of the GOP is the only conservative party in the developed world that resists the apparent consensus. I have visited oil company websites, and it seems they accept the science. Bottom line is that most of the world thinks there is something that should be done about the situation. But if enough evidence mounts to the contrary, we can act differently. What I don’t understand, tho I may be ignorant of it, is why someone like Sen Inhofe doesn’t have hearings, invite prominent skeptics and proponents alike to testify, and continue to enlighten us so that we make better policy.
Acid rain is the result of smog being washed out of the atmosphere. All pollution is local. Meaning it never gets beyond the troposphere, and is therefore washed out of the atmosphere (usually in the form of acid rain) after a few weeks. The air pollution from China, for example, never reaches the western shores of the US. Acid rain has absolutely nothing to do with the climate and is 99% of the time the result of human pollution.
The Ozone Layer, however, is another story. Ozone is created by combining molecular oxygen with ultraviolet radiation. It resides between the troposphere and the stratosphere. Being made of entirely oxygen it is highly volatile and easily destroyed. Where there is no sunlight there is no ozone. You will notice that every "ozone hole" the fanatical left reference it is always over one of the poles during the Winter months, when there is no sunlight.
The Ozone Layer is thickest around the equator (which receives the most sunlight) and thinnest around the poles (which receives the least sunlight). It also has absolutely nothing to do with the climate. As long as there is oxygen in the atmosphere and sunlight there will always be ozone.
In order to have an effect on global climate it must reach the stratosphere. Only the most powerful volcanic explosions are able to reach that far into the atmosphere. In the last 150 years there have only been two volcanic eruptions that reached the stratosphere and effected the climate of the entire planet: Pinatubo, 1991; and Krakatoa, 1883.
Consensus also doesn't mean anything in science. There was 100% consensus among the 46 scientists at the National Science Foundation in March 1973 that the Holocene Interglacial Period had come to an end and we were all facing another ~100,000 years of glaciation where between 20% and 25% of the planet would once again be covered in ice. Six years later those very same 46 NSF scientists changed their minds, and their consensus.
Consensus is only used in science when there is no data, either way. As soon as an observation is made or data becomes available then consensus goes into the trash. For example, in 1921 there was 100% consensus among astronomers that the Milky Way Galaxy was the entire extent of our universe. Then in 1922 Edwin Hubble obliterated that consensus with observed data that showed our galaxy to be just one of trillions in an ever expanding universe.
So the only thing anyone should ever take away from "scientific consensus" is that they don't really know, either way.