It's a great question. I'm sure the answer varies a lot by who you ask.

For me, there's a ton of extra control and capability from having things local. Nothing wrong with github, and agents are great with the gh CLI, but it's really not quite the same.

Plus, having it based on directory structure rather than repo means I can locate tickets where the work actually happens. Not everything I work on is on github, and some of the things that are on github are in monorepos where each project really deserves its own set of tickets.