Actually, Librewolf team set up recently a poll "should we move to Codeberg?". And this was one of the reasons for migrating.
P.S. other privacy/convenience issues with gitlab:
- gitlab.com seems to require credit card information for new users signing up, which is not really great if people just want to report bugs.
- gitlab.com uses Cloudflare, which for a few weeks locked out LibreWolf users from accessing gitlab.com in the past.
- GitLab requires Javascript even to just look at issues, which is not the case for Codeberg
P.P.S. They did move their codebase to Codeberg as a result.