On top of that it’s just cruel and unnecessary to go on eating so much meat.
I don't know if this is actually true, but anecdotally at least it seems to be. The people around me who seem to be most active when it comes to the topic of climate change also tend to be vegetarians or vegans. And many of them started down this path by changing their diets, sometimes even for reasons that weren't ideological.
What do these people do? Unless they're working on renewables technology or carbon-capture technology, they're not doing anything useful. That's just how the math shakes out. The climate problem is so huge that only engineers and scientists can help us now. Everything else is just putting on one of those "raising awareness of breast cancer" ribbons.
I imagine some of them could be working on the things you mention, but most of them don't. But that's particular to my current network.
But some of them do have strong relationships with people who play some meaningful role in the whole climate issue. At least two of these 'people around me' have siblings that occupy high-level engineering/management roles in some of the most impactful (and worst) companies.
It's not much, maybe, but perhaps it's not meaningless.