I think it’s plausible that Putin wanted it done. It got Russia out of a contractual obligation and greater isolation of Russian companies makes the oligarchs’ position tied to Putin. The oligarchs can’t go to the West since they’ve been sanctioned and their companies are increasingly barred from doing business in the West. That isolation makes their fortunes tied to Putin’s survival. Think Cortex burning the ships.
In a personalist authoritarian regime the rationality of actions sometimes depends on wether or not the dictator is being rational on a given day.