Perhaps other options exist.
Perhaps Russian citizens seize the opportunity to end Putin’s reign and support WMG - and then decide they want leadership other than WMG.
Russia has spent around 10-15X the expected cost/losses fighting Ukraine. WMG isn’t exactly overthrowing Putin and inheriting a functional military or government.
Democracy is largely a joke, however Fascism and Communism largely don’t respawn after a power swapping struggle.. this may be just a more sudden transformation.
Inheriting Russia as a new unelected power will mean a lot of negotiations and conceding with other powers to bounce back - or they have no way out of just becoming a North Korea that’s slowly crumbling. Russia needs investment, not a new dictator.