It may work for that query but it doesn't work for the query in general, especially with multiple words.

I run into this frequently when searching error messages. Quoting the error is useless, it still returns pages that contain parts of the quoted string.

I don't encounter this behavior unless there are 0 results for the quoted version.

Doesn't work for every term, or for every person.

When Google ignores it for me, it is usually on "high value" terms, with lots of potential ad views.

But to say "It works exactly as expected" is only correct for you and your machine.