The tag is present in Lintian version 2.104.244. That is the most recent version we know about.
Debian packages should not install files under
/etc/apt/trusted.gpg.d/ or install an
Trusted keyrings are under the control of the local administrator and packages should not override local administrator choices.
Packages whose names end in
-archive-keyring are permitted to install such files.
Refer to the apt-key(8) manual page for details.