The main point is that ECS is just a guess, with a huge range, and the upper range not supported by observations. A +2.0 C. guess is no better than a +1.0 guess, or a +3.0 guess.
The second point is that ECS guesses are often based on very rough estimates of the past climate, or data mined periods, such as 1975 to 2022. Even worse, it is assumed that the estimated warming was caused entirely by CO2, which is very unlikely to be true. That's a worst-case estimate for CO2 (and ECS). There is no reason to dismiss all natural causes of climate change, as the IPCC and most Climate Howlers do.
For example, we have very rough estimates of the average temperature and CO2 level in 1850. We estimate the CO2 level increased by about 50% and the average temperature increased about +1 degree C. If we assume all the warming was caused by CO2 increasing in those 172 years, we could claim a 50% increase of CO2 caused a +1 degree C. warming. We could then claim the next +50% increase of CO2 would cause less than a +1 degree warming.
Since the first +1 degree warming since 1850 was harmless, the next warming of less than +1 degree C. would also be harmless.
"Harmless" is especially obvious when you consider the pattern of global warming since 1975: Mainly warming in the higher latitude (cold) nations, during the six coldest months of the year, and at night (TMIN). Think of warmer winter nights in Siberia as the "poster child" of global warming since 1975 -- that's not exactly a climate emergency!
It is long past time to stop guessing ECS -- there seem to be guesses by the dozen. No one knows the right answer!
Instead of ECS guessing, how about Climate Reality? We have 82 years of adding manmade CO2 to the atmosphere (not much CO2 emissions before 1940). Here's what happened:
Conclusion: CO2 is not a temperature "control knob"
Global cooling from 1940 to 1975 was "revised away"
Conclusion: Government climate scientists can't be trusted.
Observations of global warming since 1975 have almost 8 billion witnesses, for up to the full 47 years. Billions of people have experienced global warming without harm for 47 years. Yet there were 47 years of global warming scaremongering, based on a high estimate of ECS ... CAGW THAT DID NOT HAPPEN.
Conclusion: CO2 is not the temperature control knob and global warming is not accelerating, even though CO2 emissions per year are rising.