Yes, apparently a girl threw herself as Johanssen at one of the NYD gigs - or at least that's what Moz wrote in his NYD book: "A very young girl clutched David's arm and pleaded: 'Take me with you pl-eease, wherever you're going...'"
But is about a dead star and the record company releasing everything that they could to cash in, and that obviously couldn't be about David Johanssen as 1) he is alive 2) The Dolls were never that popular back in those days for any company to re-release their stuff even if he had died. Morrissey said it was about 'practically anybody who's died and left behind a that frenetic fanatical legacy which sends people scrambling, Billy Fury, Marc Bolan." He seems to have only named them as examples. Some people assumed it was about Billy Fury because his photo is on the inside sleeve of Strangeways next to the lyrics, but it couldn't have been literally about him, because his death did not make the record company unleash a series of re-releases. And the song explicitly mentions MTV, so it was obviously set in present time. Bolan and Fury were stars in the pre-MTV days. Some people speculated that Morrissey was imagining his own death and what would follow it. I think that the song is simply about a typical, universal situation.