The tag is present in Lintian version 2.104.328. That is the most recent version we know about.
/usr/share/fonts/X11 other than
Type1, and some
historic exceptions must be neither created nor used. (The directories
util, used by some X Window System
packages, are also permitted by Lintian.)
Please refer to Debian Policy Manual section 11.8.5 for details.