> For an advanced git user, it doesn't offer all that much.

As a (former) advanced git user, nothing could be further from the truth. We are always the most passionate cohort of jj users in these threads. This is almost certainly because jj unlocks a bunch of additional abilities and workflows that we've been torturing out of git (or given up on, or didn't even conceive was possible) for years.

On the flip side if all you ever do it git pull, git commit, git push, jj is probably not going to offer you much.