privacy – GitLab self-hosted instances data sharing

I’m working on a personal project with some friends and it is becoming quite large, so I’m considering to self-host a GitLab instance to help preventing the development to go to complete chaos.
However, I discovered that GitLab’s privacy policy allows GitLab to gather some data from its users and share them with third parties and I’m not OK with that, but it isn’t clear if that applies to “Self-managed” instances with Usage Ping disabled (1, 2).
Some weeks ago I wrote to the developers asking for more information, but I’m still waiting for an answer.

Normally I would just discard the option, but I found that some free (libre) software projects, e.g. The Tor Project and GNOME, use self-hosted GitLab instances. Especially the former is (should be?) extra careful about users’ privacy, so I’m not sure about what to suppose.

Can anyone provide reference (or evidence) about whether GitLab’s self-hosted instances send any data (personal or not) to GitLab or other third parties when the Usage Ping is disabled?