"burn it all, "burn it all down and start over" isn't a plan. That's a tantrum.
No it's humanity's only faint hope, because if we do not stop the capitalists with physical force, they won't stop, they will use their power/capital to further divide us and purchase their own regulators, and with one technology or another they can profit from with "externalities" they don't care about because it's not their problem, they WILL destroy the only habitable world all humans rely on from one breath to the next in their need for mooooaaaaaaar. and let's be honest, if we can't even find homeostasis with this forgiving world, Mars or Titan habitation, worlds where a single mistake means everyone dies immediately, is a bad joke. It's 2024 and 2 lunar landers ended up broken and upside down. Our moon is basically the interstellar equivalent of successfully sucking on a baba. For more than "we did it" ego trips with 5 highly trained people walking a high risk tight rope of death to plant a flag, Earth is all we got without at least a millenium of technological advancement we probably don't have.
We probably won't stop them though. So we'll almost certainly destroy ourselves demanding infinite growth/metastasis on a finite world. Which it sounds like you like, as at least we won't throw an unseemly tantrum on our march to extinction, I do declare. Let it not be said that we didn't practice decorum.
I think this might be what the scientific community hypothesizes as a great filter.
https://en.m.wikipedia.org/wiki/Great_Filter#:~:text=The%20Great%20Filter%20is%20the,detectable%20extraterrestrial%20life%20exceedingly%20rare.
Maybe when species evolve sapience, they destroy themselves with technologies they are juuusst barely smart enough create, but are still too primitive, selfish, and "duuuuuuuh" to wield responsibly for the collective good. Hence why we don't see a galaxy teeming with signs of other civilizations.
We just made this gasoline shit that makes these wheels go vroom and went to town because fuck it wheee! What could happen?! "herp derp if we didn't humanity wouldn't be 9 billion strong!" Oh you mean our numbers would still such that the planet could sustainably support our species? Can't have that amirite?
Burn it down and build something sustainable is our only slim chance, but don't worry, we'll fail at that too. The Earth will eventually recover and go back to the drawing board though. It's recovered from worse than us, even mistakes of evolution that were worse than us, we're just the inverse of the Permian extinction event, caused by carbon storing trees that at the time had no mechanism for efficient decomposition. I take comfort in that. It almost lets me forgive my species for being the fucking worst, because maybe we're just a fact of a large enough ecosystem over time. You can't blame a metastatic tumor for what it does, it's in its nature.