Chris Hogg wrote:

The resulting graph is herehttps://ibb.co/mDSr3jV The changes in CO2
are the blue symbols; the red line is the El Nino index.

It's difficult to see any correlation between change in CO2 and the
major El Nino events of 1965/66, 1972/73, 1982/83 or 1997/98. Only the
2015/2016 appears to correlate with a higher CO2 increase, and even
then, it's hardly spectacular.

More alarmism?

Quite possibly ... will have to see how their prediction turns out.