Is revolution possible?

I acknowledge that some aspects of the modern world's understanding with "revolution" come from the influence of the Christian Judgement Day. Sometimes, there is a sense that one day, revolution will break out which will sweep away the ills and depauchery in the world. Obviously more realistic researchers and activists who still believe in revolution hold that it may be possible with some vanguard party or mass horizontal movement, but I've started to become more skeptical of this understanding of revolution.

Though problematic, the essay "Desert" does point to some troubling realizations about the nature of climate change, politics, and posits that, "Global anarchist revolution is not going to happen. Global climate change is now unstoppable. We are not going to see the worldwide end to civilisation/capitalism/patriarchy/authority. It’s not going to happen any time soon. It’s unlikely to happen ever. The world will not be ‘saved’. . . This realisation hurts people. They don’t want it to be true! But it probably is (para. 2)."

I've found myself starting to believe this given recent events, especially in the Middle East with Rojava and lean, but elsewhere also. Is it true that revolution is not possible anymore? Or do we need to change our conception of revolution?

I'm still new to anarchism so feel free to let me know if there's something I'm missing or don't understand. Thank you.