You'll notice
Useful2 Signal2
The Co-authored-by trailer is built one way for everyone; you can still turn it off.
What's wrong with this entry?
Anonymous. No account, no email.
What
The trailer added to commits and PRs no longer branches on first-party versus non-first-party naming; a single name lookup produces it. You can still turn it off through the attribution settings for commits and PRs.
Evidence
Co-Authored-By: ${BZn(at())} <[email protected]>
Strings lifted out of the shipped bundle, so the claim above can be checked against them.