Users will have the option to disable data upload before any data is sent for the first time […] and will not depend on Google Analytics or any other controversial third-party services.
While its still just a proposal, there is a lot of focus in protecting the privacy of their users. I’m glad they have those considerations in mind, and I hope it stays that way.
I recommend most people to read the devel list thread in order to better form an opinion on the topic.