Exit polls from the November elections don't bear this out.
The lowest income voters trended towards Harris. As did the highest income voters. Trump's support lies solidly in the middle class.
If somebody is middle-income and thinks they aren't benefiting from a stable government and economy, I'm not really sure what to say... could we collectively do better? Absolutely. Is burning it all to the ground even remotely sensible? No, not even close.
Tons of Trump's most-dedicated supporters appear to be able to afford very expensive trucks and boats and such, and to be able to do stuff like travel to DC to attempt a putsch in the middle of the work week. They're benefitting plenty from the stability of the system. Unfortunately.