Criticism of violating people’s privacy is not limited to a particular organization or individual. If any service (etc.) violates users’ privacy rights, it should be criticized. Doesn’t matter if it’s libre, proprietary, governmental, or private. People’s privacy should be respected no matter what service you’re providing or how your service is working. If you can’t respect people, change your service and if you can’t change it then stop.
We should all agree that most people in the world don’t know how their private life and privacy is being violated and there’s some people that spread disinformation in support of these services. We should also stop calling these data-hungry companies “services” because what they provide is a platform to steal people’s data and it’s not a service.
We don’t encourage people to stop using Google because we don’t like Google (I mean we don’t like it but it’s not the point), we tell people stop using Google because Google and other similar evil corporations are violating people’s rights (and that’s why we don’t like it). If a software libre service tracks people or violates people’s privacy rights in any way, it should be criticized too. We should not have double standards or differentiate between services; specially when it comes to libre services as such services may create a bad impression of software libre among users.