No it doesn't, it assumes you have to understand the science to come to any sort of conclusion about it. You can't refute something if you have no understanding about what the science says.
40 years ago a small number of scientists claimed we were going to experience global cooling, while the majority were talking about global warming. As we got a better understanding and more data, the number talking about global cooling has become even smaller, where as global warming is the vast majority.
Care to explain how the earth being warmer or cooler in the past means that man made climate change now not a problem for us?
It is important to know why it is happening and how we going to adapt.
Reducing CO2 emissions is extremely expensive, making the humanity much poorer.
Being poorer means we will struggle to adapt to global warming and other problems humanity face.
The worse thing we can do is reduce emissions of CO2 becoming poorer and the climate still changes.
In fact, even if the shift in the climate is caused by human CO2 emissions (which by the way are a 2 orders of magnitude smaller than the natural CO2 emissions) it probably makes more sense to prepare for the challenges caused by the climate change in other ways.
Finally, the scientists talking about global warming (now climate change) also made predictions and build computer models based on the "science".
Those models and predictions have so overestimated the warming and any consequences of the warming, meaning the predicted cataclysm is further away in time, which gives more time to prepare.
So, no, one doesn't have to have a PhD in climate science to look at the computer models and point out "look the predict results are wrong so whatever where the scientific assumptions is fair to assume they were incorrect".