One of the big issues people had with the Gitlab proposal was that it was going to use 3rd party trackers, so Gitlab wouldn't have full control over your data. Some people were commenting that if the analytics data never left Gitlab, they wouldn't have an issue with it. They were also going to block access to your account until you accepted the tracking.

Following the shopping analogy, it'd be like they let you in the store, but they won't let you leave with your purchase until you fill out a survey by a 3rd party company.