Your linked figure confirms that 2018 was cooler than things are today.
The chapter 11 temperature over view is concerning for the consequences:
The frequency and intensity of hot extremes will continue to increase and those of cold extremes will continue to decrease, at global and continental scales and in nearly all inhabited regions with increasing global warming levels.
This will be the case even if global warming is stabilized at 1.5°C.
Relative to present-day conditions, changes in the intensity of extremes would be at least double at 2°C, and quadruple at 3°C of global warming, compared to changes at 1.5°C of global warming.
... The frequency of hot temperature extreme events will very likely increase nonlinearly with increasing global warming, with larger percentage increases for rarer events.
It's the harder to precisely predict potential tipping point changes that should really concern and motivate global changes to emissions.
> Your linked figure confirms that 2018 was cooler than things are today.
So? what does that have to do with the question at hand? An 8 year change is irrelevant in the world of climate science. It's statistical noise in a system where cycles run for decades. Weather, not climate.
> The chapter 11 temperature over view is concerning for the consequences:
...and then you quote the part that says exactly what I explained to you, as some kind of counter-argument?
You will note that the part you quoted is, again, combining the types of extremes. They're not talking about just hot days.
I honestly do not understand this need to fatalize data. You don't have a counterargument (because what I said was factually true) so your only rebuttal is to wave your hands and say that it's all scary.
We can be honest -- the world is getting warmer -- and admit when the people predicting imminent death and destruction are exaggerating. This is good!