Data Management maturity has many goals for accomplishment including having a positive effect on culture.

It is important to be able to assess the level of current state for each component against the Data Governance best practices to determine how readily the culture has accepted Data Governance

Data Governance does not affect the culture of the organization directly

It is important to have many goals so that you can show progress on some of the goals even if you can't meet all of them

Data management maturity only has one goal

Best practices for data management are not the same as best practices for Data Governance