You are very right! I am 25 years old and as a big fan of 80s music I know the difference between alternative and mainstream 80s pop.
I got a little excited when I looked to find the first track was The Cure - Lullaby, but then became confused when I saw Culture Club as the 2nd track because they are just mainstream 80s pop! and then the tracks that follow were also mostly mainstream!
I went through the track list several times to try and find something actually alternative, i.e. Siouxsie & the Banshees, Cocteau Twins, Sonic Youth etc but no luck :-(