That's the old WRC spoiler which looks awful! ^ For a hatchback the Focus was considered to be a very well designed car for it's time. Your opinion is certainly in the minority compared to the number of people who bought them and still buy them.
Reminds me of my 00 ZX3 minus the wing. Loved that car even though it was slow as dirt but it stayed together despite me trying to blow the hatch off with all the subwoofers that went in it.