People average 100x the annual CO2 from all volcanoes combined. Large eruptions release a great deal of matter but not that much CO2 as a percentage and not very quickly.
Even if by large you’re talking about once in 50 year events like the 1991 eruption of Mount Pinatubo that lasted days during which it released 10 cubic kilometers of material. But it still only added 0.05 GT of CO2, roughly what people currently release every 12 hours.
Why would we expect a volcano to emit more than incidental amounts of CO2 in the first place? Despite the superficial similarities, it's not a bonfire.
I hope that a moderately dry and educational page like this would not be taken down for political satisfaction.