There are some other changes with my current key:
* Actually revoke an unused uid
As per RFC 4880 [1], a revocation signature (sigclass 0x30) "should
have a later creation date than that certificate." However, somehow in
my keyring I have certificates newer than the previous revocation
signature. As a result, that uid is not marked as revoked by gpg. I
created a new revocation signature to fix that.
* Make @archlinux.org the primary UID
[1] https://datatracker.ietf.org/doc/html/rfc4880