What kind of action? Extinction Rebellion had a plan to shut down Heathrow using drones. Is that the kind of thing you think will help?
Probably too little too late - a mere stunt. I was fantasizing more along the lines of so-called 'fire sale' hacker attacks against entire countries dedicating themselves to turning up the heat and 9/11 scale strikes against CO2 producing infrastructure. We're going over a cliff anyway so why not go out with a bang?