The article does a bad job at that, because it remains rather vague and doesn’t explain the concrete problems they are trying to solve, that aren’t either already solved by Git-linked issue trackers, or would be better solved by improving support in Git itself (like for stacked branches).

Building UI and auxiliary features on top of Git is a crowded space, it’s not clear what compelling innovation they are bringing to the table.

You can think that because you've read the article.