Not that it matters - any administration that lets the economy crash will not stay in power. They will be kicked out .
No, none of the things you mentioned would occur if inequality were addressed and the newly scaled-down economy were appropriately retargeted to meet peoples’ basic needs first and foremost.
It’s called degrowth.
Or are you one of those who believe that economic laws will somehow override physical laws? Because physical limits exist, and we are hitting them.
Take for example North Korea (among the most advanced places in the world right now, in terms of comprehensive de-growth policies): with their ~540 kWh electricity consumption and just .71t CO2 per capita emission (compared to USA: 11.8 MWh and 15.12t CO2), they are experts in the field of de-growth that all other modern societies should endeavor to emulate.
Addressing inequality is similarly important for halting the rise of political authoritarianism (as it grows in reaction to the former), which is an obstacle to all these changes.