Why do all opposition to the CO2 thesis fail?

David versus Goliath! Is the climate change debate a battle between Anthropogenic Global Warming (AGW) and Skeptics? Is the skeptical side the looser? Yes! Since they emerged on the scene 30 years ago, they seem not to have made ground. They even lost the infamous case on “Climategate” November 2009 (Background INFO), which based on a variety of commentary by leading climate scientists that personally disparages high-profile climate skeptics, and includes attempts to coordinate efforts to retaliate against them in various ways. See: Wikipedia. While the 10th anniversary was in November 2019, David remained silent. The Skeptics merely continue attacking the proponents of AGW as before Climategate. Why do Skeptics fail to reach a level for a fight on an argumentative equal level?