In 1976, Bowie was indeed at a similar stage of self-destruction to that of Cobain.
Although I am not sure whether Bowie necessarily 'used' his music to work through his problems, Station to Station does contain his spiritual healing song (Word on a Wing).
So all things considered, yes this does seem like a pretty logical period for Keidis to cite in reference to Cobain.
What initially threw me was the references to space and spheres (which is more of a Ziggy thing than STS).
Bowie in Australia 2004 | Join the Community