[kohtatsu]

In my opinion they are the same.

If you stand up for your product, you are standing up for your users, or your clients if that's a less ambiguous term.

For some teams, for example a lot of teams in Google and Facebook, the end-users are often different from the Product's clients; the client of Google's Chrome is Google's empire. The programmer that added the X-Client-Data header undoubtedly improved the product, at least short-term-business-wise, while actively harming it for end-users. Someday end-users may leave if they continue to erode trust, but for now it's a boon for the Product.

Edit: Please don't work on those products. Please develop products that respect people. If you develop trust, and actively respect people; I posit that a lot of people will opt-in to reasonable analytics, and even advertising. If many don't now, they might when the dust settles.