I remember a time when the v3 API didn't even have IDs and whenever someone in your org changed their username or renamed a repo you'd be left guessing who it is.

This is also the reason I wrote our current user onboarding / repo management code from scratch, because the terraform provider sucks and without any management you'll have a wave of "x got offboarded but they were the only admin on this repo" requests. Every repo is owned by a team. Access is only ever per-team.