No. The trends go in different directions. CO2 goes up more than the volcanoes. It is the general trend that makes a difference compared to the fluctuations.
According to the evidence, these volcanic eruptions were not the cause of the consistent rise in CO2 levels. If they were, CO2 levels would steadily rise and fall. The chart shows that CO2 levels rose even when there was a drop in volcanic activity. That means some other factors are causing the increase in atmospheric CO2.
