What, cause it is too busy?

I haven't made a comprehensive list, but off the top of my head:

- frequently needed navigation links buried within menus within other menus

- menus labeled by mysterious icons, sometimes with mysterious text, sometimes with no text at all

- authentication system that has failed me in a variety of ways over the years, even locking me out of an account in one case

- client-side script execution required to do anything all, even simply display a file

As I said, I haven't kept a list, but GitLab is very much in the category of interfaces that were built by javascript fanatics who don't understand (or don't care about) ergonomics or privacy. I accept that not everyone is bothered by its many problems, but I avoid it when I can.