There has always been a possibility that Russian economy/ military/ political system will collapse. The Prizoghin mutiny gave one example of how that might materialise.
Putin's strategy, once it became clear he'd been defeated in the initial battles of the war, is to outlast Western resolve in general, and hope for Trump victory specifically.
It's still very much unclear how this will turn out (at least to me) but it does seem amongst all the gloom, that with the need to import Korean troops, the apparent increasing reliance on non-military or no vehicles, and the evidence of economic difficulties heightening, the probability of Russian collapse is increasing.