Aviation is only about 2% of the whole CO2 emissions worldwide.
Over 60% of emissions come from things like transport of goods and people using cars, heating/cooling of homes, industry (iron/steel, chemical/petrochemical, ...) and so on.
70% of annual emissions come from outside of USA and Europe. Cumulatively USA and EU still dominate.
"If we do not start reducing global emissions over the coming decade, plausible scenarios to limit warming to below 2C will move out of reach as well."
Aren't we already plausibly tracking roughly +2.7 °C or so?
We are 100% going to hit +1.5 °C already in the early 2030s.