The Fermi Paradox says we should have contacted alien life by now

The Great Filter says we haven't because a civilization's capacity for self-destruction increases to certainty over time

I thought for us it would be an exotic technology or scientific discovery that instantly destroys on a large scale

Nope. Far more depressing and mundane

We simply watched ourselves destroy our climate and lacked the will to do anything about it because someone was making money off it

https://www.theguardian.com/environment/ng-interactive/2024/may/08/hopeless-and-broken-why-the-worlds-top-climate-scientists-are-in-despair

‘Hopeless and broken’: why the world’s top climate scientists are in despair

Exclusive: Survey of hundreds of experts reveals harrowing picture of future, but they warn climate fight must not be abandoned

The Guardian
@benroyce
The Great Filter, in my opinion, is exactly what it says it is: a filter.
Any species sufficiently advanced to create tools to manipulate its environment sufficiently to put it into ecological overshoot, is forced to either learn how to limit its excess or drives itself to extinction in short order.
Its very much a choice, and our next potential evolutionary step depends on our choice, or the choices the most powerful of us make.
We will get exactly what we, as a species, choose.