The tag is present in Lintian version 2.104.234. That is the most recent version we know about.
This package selects a custom compression level or algorithm
debian/source/options. Please remove the call and let
dpkg-deb(1) select suitable defaults.
Custom compression settings are usually chosen for one of two reasons:
Higher compression levels or more advanced algorithms shrink the sizes of large files, but they can cause problems in the resource constrained environments used in Debian's buildd infrastructure. For example, higher than expected memory consumption may trigger an FTBFS or a failure to install.
Lower compression levels or less advanced algorithms are sometimes needed to support older Debian version. Unfortunately, they also make it harder to change the defauls on an archive-wide basis.
Some legitimate use cases trigger this tag. Please override it.