Why is there a "no LINGUISTIC content" option for the RELEASE language?

The style guide says the release language is about the tracklist and not the lyrics, so why is there a “no linguistic content” option?

For releases like this:

(I guess in this case you could say it’s English because the title is, but the general idea stands)

This might be a better example:

That said, a lot of lang:zxx releases are probably mis-selected.


Forget I asked - my brain glitched. I kept reading and writing linguistic, but somehow still thought lyrical - only that would be wrong.