Not exactly sure what report you're talking about, but it was my understanding that CO2's role in climate regulation had to do with its ability to absorb infrared radiation reflected back from the surface that had previously been heated up by the sun, not by relecting anything itself per se. CO2 is transparent.
In any case, the finding you are referring to really doesn't pertain to the conversation we were having.
CO2 is absolutely necessary to protect the Earth by reflecting most of the Sun’s energy back into space
"More important" does not translate into "most."
It’s been shown that 1. CO2 is not the threat claimed by those confusing CO2 with true pollutants and 2. CO2 is much more beneficial to life on Earth than previously known.
The global warming/change scare mongering took a fatal hit.