Did you know: more than one thing can happen in the world at once!
Fighting climate change doesn't prevent us spotting or stopping asteroids, or supervolcanoes, or whatever. Where in the world did you get such zero-sum nonsense from?
The satellites we use to monitor CO2 levels in the atmosphere are great at spotting volcanic activity.
Building those satellites and getting them into orbit hasn't 'depleted our allocated space launches'; it's made us better at getting to space; which makes us more prepared for sending asteroid intercept/divert missions.
Btw. spotting volcanic activity will not help you on a big eruption that changes the climate for millions of years (Deccan Traps anyone?). No sure anything will help us in such a scenario, to be honest
Congratulations, you got there in the end.
Meanwhile, Dutch activists have made some minor progress in the fight to fix the climate.
How do we tackle super volcanoes? How are we planning for climates more similar to other geological periods, where it was much warmer or colder without human intervention?
Is it even clear that climate change is the biggest risk to address now? Why don't we have similar movements to mitigate other large risk?