Ofcourse they are the rubber stamp of central government.

Arif Mohammad Khan, Governor, on Kerala govt challenging #CAA in SC: I have no issue with them going to SC but they should have informed me first. I being constitutional head come to know about it through newspapers. Clearly, I am not just a rubber stamp. pic.twitter.com/V22ALVfsWy

— ANI (@ANI) January 16, 2020