Issues, milestones, discussions, pull requests, build logs, they all stay on the chosen host. That host can then add specific conditions to creating accounts, or participating in the discussion, searching code etc. Such as force you to have a phone number in your account, otherwise you won't be able to comment on issues. And all of these things might be locked in without a way to export and migrate to another host, so yes, it definitely matters where the project is hosted.

[–] ScreaminOctopus@sh.itjust.works 2 points 8 months ago

It would be nice if platforms like Forgejo and gitlab could hook into some sort of review and issue tracking protocol that was built directly into git, like git-appraise. Unfortunately it doesn't look like git appraise is actively developed.