Problem with climate discussions is that 99.9% of people don’t have any impact whatsoever (drinking through paper straws or buying eco friendly t-shirts doesn’t change a thing).
Nothing is actionable. People who could make an impact won’t because it’s not in their personal interest - e.g. jet flying celebrities or owners of industrial companies.
Maybe Fermi's Paradox filter isn’t some big cosmic event but a simple industry optimization problem. Many planets had intelligent life but industrialization, as a form of energy transformation, boils everyone before they can make a contact or travel through space.