The next major version of the codesniffer (which is 4.0) would remove the @codingStandardsIgnore... annotations, which could be replaced by phpcs:.... or @phpcs:.... before a new version is released.
The annotation are most used to disabled all sniffs, but in the future there should be used to only disable/ignore the sniff which is needed like the LineLength sniff
https://codesearch.wmcloud.org/search/?q=%40codingStandardsIgnore&i=nope&files=&excludeFiles=&repos=
Not sure if codesniffer could warn on this tags, because there are usually suppressing all sniffs
Doxygen needs cleanup on some repos:
https://codesearch.wmcloud.org/search/?q=%5B%5E%40%5DcodingStandardsIgnore&i=nope&files=&excludeFiles=&repos=