[majewsky]

Even the freedom to use is a freedom that applies to users.

With a proprietary product, the vendor can make changes behind your back via the auto-update backdoor, and you cannot do anything about it. With an open-source product, if a user does not like what the vendor is doing in the new version, they can just stick with the old version.

(It used to work that way with proprietary software, too, but today I cannot really think of software that cannot be forcefully end-of-lifed by the vendor. For example, look at how Samsung disabled the Note 7 phones with OTA updates.)