As mentioned in TFA, that was based on this source[1] which surveyed what "app developers" used. If you have alternative statistics, I'd be happy to see them, but GitLab did provide a source for their claim.

[1]: http://blog.bitrise.io/2017/01/27/state-of-app-development-i...

Maybe for paid solutions. But I'd guess if you take the free version of Gitlab into account, it is probably the dominant self-hosted Git solution.

Interesting statement.

Gitlab provided a datasource. You've got a better one showing your counterpoint, I take it?

You're directly contradicting the article. Got any evidence?