I didn't like several of them, but who's to say? They might be right.
The first one, Bobby Darin, I took one look and said "He looks like one of the Republican candidates". And then I read that at the time of his death, he was getting involved in politics. Are we sure he's dead?
And I didn't count, but it seems to me that several on this list died at 27. When I was 27, I ditched a slightly constricting home situation and moved to New York. Coincidence? Young-life crisis, as opposed to mid-life crisis? Hmm...