IiRC it was more so that the Church got actual fiefdoms and wanted control so that potential priestly families wouldn’t just distance themselves into secular noble houses, taking lands with them.
Fiefdoms and related duties originated from kings, so the church wanted similar parallel rights over their vassal priests.
Didn’t that one come later because certain members of the clergy were having kids and functionally turning their positions into hereditary fiefdoms?
IiRC it was more so that the Church got actual fiefdoms and wanted control so that potential priestly families wouldn’t just distance themselves into secular noble houses, taking lands with them.
Fiefdoms and related duties originated from kings, so the church wanted similar parallel rights over their vassal priests.