The tag is present in Lintian version 2.104.328. That is the most recent version we know about.
The package set up a device for user access without using the uaccess tag. Some udev rules get the same effect using other markers enabling console user access using rules in /lib/udev/rules.d/70-uaccess.rules. Others should specify TAG+="uaccess" in the udev rule.
Please refer to https://wiki.debian.org/USB/GadgetSetup for details.