Can “an over-concentration on the ‘objectivity’ of baptism . . . lead to a . . . casual or careless approach to actual Christian obligations”? Wright says so ( Paul and the Faithfulness of God 
But that assumes that what baptism “objectively” says and does is simply, “You’re in.”
And that’s not what baptism says and does. It says “you died and have been raised; therefore kill sin and live to God.” Baptism objectively declares something to be true, objectively makes something true, objectively promises, objectively demands.
It’s not over-concentration on objectivity that’s the problem. If there is a problem, it’s bad baptismal theology.
