You're wrong about the values. Since the start, GitLab's values were real and lived, unlike every other company I've been at. Only after Staples' takeover as CEO and C-suite changes, they started eroding rapidly, starting with Transparency.
Source: I'm ex-GitLab
Yeah it was a pretty awesome place to work up until the IPO, my first year was probably the most enjoyable I've ever had at a job.