I have no strong opinions about Uber itself, but as far as data management is concerned I am ok with this. I don't want police gathering my data via a third party for no good reason.

From the Article: "A spokesperson for Kalanick said the kill switch was “not designed or implemented to obstruct justice”. She said it was used to “protect intellectual property and the privacy of […] customers, and ensure due process rights are respected in the event of an extrajudicial raid”.

His lawyers said because no data was permanently deleted in the process, authorities could still obtain it later."