The way to eliminate the rich is for us to band together and strip them of their assets, then they will no longer be rich.
Anyone working against the state, against the current of history, has forfeit his right to exist. This is justified by the beacon on the hill, which is communism ("a planet of equals"). Sounds familiar.
On some level I admire you because you're really just extending commonly held ideas to their logical conclusion. That's something most people don't have the guts to do. But the lesson here is that we absolutely cannot extend these "big ideas" as you've done. We have to exist in an indeterminate state and avoid totalizing our worldviews. In other words, you should find a way to advocate for measures to deal with climate change without sounding like a psychopath.
We only have about 10-15 years until complete climate collapse. The time for advocating gentle measures was 50 years ago. Which was done, and ignored by the ruling classes.
Now we only have time for drastic measures: An end to countries, and end to capitalism. Global Ecosocialist cooperation of the working classes, taking the means of production by force and ensuring only sustainable processes are continued.
I think it's deeply sad that you haven't learned the lessons of the 20th century. "Gentle measures" are the only way to make progress, we can't sever our connection to the past, drastic measures of the kind you're proposing have always resulted in the vivisection of actual human communities based on a quasi-religious understanding of what's going to happen in the future.
Ecosocialism has never been tried, and it is now long past time. Stalin and Mao certainly didn't even try. And even if human communities are vivisected, so what? The Earth is more important.
The Earth is very much my religion and I stand by Her.