Benedict came in as a “place holder” like some elderly Soviet functionary temporarily elevated to El Supremo while the real power struggle could go on sub rosa for the permanent replacement.
The Social Justice Warriors among the cardinals clearly won the power play, and Pope Marx is the result. That’s how I see it.
Like a “contested convention,” as soon as the SJWs had their majority, they shoved Benedict out and brought in Pope Marx.
Once the Marxists gain control of an organization, like the Mafia, they are very hard to remove.