The reason vscode is so popular is because it is far more efficient than the electron app it’s based on. Atom was slow and the worst resource hog I’ve ever seen.
The plugin ecosystem and great built-in support for the most popular languages keep it popular.
The art style is nice but the content makes no sense. Kanban and scrum are parts of agile. They are not their own systems.
Lean also doesn’t mean you have no money. It’s a system of manufacturing where you cross train people to do the jobs on either side of them so they can pick up slack if needed and keep things moving without hiring more people.