Just building on your thoughts and trying to view earth dynamically rather than as a test tube the way warmers do.
More CO2 also helps plants grow more quickly. For example, plants grow better where bodies deteriorate. So the added plant life seperates the carbon from the oxygen.
Then there’s the other point — heat causes more evaporation of sea water. Evaporation = clouds. Clouds block sun rays and cool the air. Rain causes more plants to grow. More plants can improve moisture in the region.
Then there is the earth’s crust itself. Heat strains the fault lines. Fault lines crack open volcanoes. Volcanic ash not only blocks sunlight leading to global cooling, but also it helps increase vegetation [although there are temporary areas of devestation].
There are stabalizing factors.
Mankind will be the death of planet Earth; but not from AGW. In mankind’s headlong rush into things it knows nothing about, nature will be messed up so much that, if left to its own devices, will leave the planet a scorched ball of - nothing.
Their goal is to reduce CO2 to some “acceptable” level. That decrease, however, means that fewer plants will survive to produce O2. Less O2 = people die. Less CO2 also means ozone layer breaks down, allowing radiation to get through. More temperature increase ......