You are posting hyperbole, millions of years is a bad measure to tell people that human influence is affecting. There is no equilibrium either, nature changes a lot. Look at temperature history, big changes happened again and again. https://en.wikipedia.org/wiki/Global_temperature_record#/med...
When people say “the climate has changed before,” these are the kinds of changes they are talking about.
https://xkcd.com/1732/
You’re right, there is no equilibrium. But there is a limit to how rapidly any system can handle changes while remaining recognizable as the same system.
Yup, it's about the rate of change. Sucking 10s of millions of years worth of sequestered carbon out of the ground and injecting into the atmosphere over just 100 years is complete and utter suicide. For all living things on our planet.
You’re right, there is no equilibrium. But there is a limit to how rapidly any system can handle changes while remaining recognizable as the same system.