Obviously the planet won't die. The current biodiversity and the civilization depending on it however might.
In my country, streets are literally melting now, because they were never built for temperatures this high. We had 5000 heat deaths within 2 weeks. Temperatures never seen before in almost 250 years of consistent measurements of weather and temperature.
It's bad. And the data is available for everybody, including you, to see.
E.g. here, they've got tons of raw data available too (german): https://www.dwd.de/DE/leistungen/zeitreihen/zeitreihen.html
Don't know what you see there - but it sure does look like an exponential curve, doesn't it?
But I have a feeling you knew what I meant and are just being deliberately obtuse.
The Gaia hypothesis is science fiction compared to climate catastrophe, which is real.