Yes - but only a bit! And personally I still like it as a reference point when I tell people about it - because in the end, it mainly affects what they see of the repo and how they interact with it, and the result is still a valid git repo (if they've colocated).

Isn't git the only supported backend?

I always introduce jj as a better git ui.

It's the only open source backend right now. Google's backend for their VCS infrastructure is still private.

They support Gerrit, Google's internal VCS.

Gerrit is not a VCS

Cool