Part of why you feel so strongly about climate change is that you (us, I guess? I'm only four years older) haven't lived long enough to recognize that, while its a massive challenge to the species, two things:
1. We only ever confront challenge either on the individual or among our peer group. No matter how much you try to collectively call everyone a citizen of the Earth and part of one family your biology prevents you from being empathic to those a few orders of magnitude outside your local self. This means you both cannot wax poetic for the woes of everyone else and you need to recognize 99.99999% of humanity will, optimistically, not give a shit about you.
2. Climate change is the kind of problem with stupidly simple solutions that are just hard to implement and take sacrifice and work to accomplish. In the same way curing many plagues in the era of vaccination was a simple solution - reach herd immunity in a population - with a logistical nightmare to accomplish. People died by the millions in the struggle to make it happens, and millions will die victims of climate change until the broader interests of humanity wake up and force the change necessary to fix the problem, but its not any one persons burden to bear.
We could all be killed tomorrow. by a gamma ray burst from a star in our local cluster going supernova. Or an accidential nuke launch at a dilapidated silo could cause total annihilation of the surface world. Or some alien species an infinite amount of distance from us could execute an experiment that fundamentally alters the constant rules of the universe that redefines what matter is.
We don't know whats coming, we do what we can for ourselves and those around us in our time, and we can't be distracted from what we can do with what we can't do, like alter the minds of billions to suddenly decide to take climate change seriously, or stop violent crime, or end tyranny, or feed everyone. That later is a great example - plenty have wished and prayed for global food security, but it took the efforts of millions of individuals over decades to propagate wells and agricultural practices throughout the third world that have led to recent years being consistent record lows for global thirst, hunger, and extreme poverty. They might have cried about it in their early 20s in the 70s-90s, but they got up and did what they could, and collectively had a major impact on it.
So if you really do care about climate change - and being from HN - there is a huge tech scene around solutions and tools to fight it. Get involved and do something. Don't just complain about it, because that doesn't help anyone.