>Also, for me, GitLab's heavy reliance on JavaScript disqualifies it as a serious competitor to GitHub.
How in the world using JavaScript makes a project less serious. Although Gitlab use mostly use Ruby and Go. JavaScript is used for Web UI only like most companies.
I'm guessing the key word here is reliance. Some of us are fine with sites that use JavaScript, but only if the core functionality still works when scripts are blocked.
If you're wondering why someone would feel this way, the reasons vary from person to person, but perhaps the best reason is that a site that becomes nonfunctional when client-side scripts are disabled puts itself at odds with basic web security precautions.
How in the world using JavaScript makes a project less serious. Although Gitlab use mostly use Ruby and Go. JavaScript is used for Web UI only like most companies.