I'm not sure what "gothic music existed in the 1980s" is meant to indicate as a response to "goths existed in the early 2000s as a cultural archetype".
True Goth died our way before any of that. They totally sold out when the sacked Rome, the gold went to their heads and everything since then has been nostalgia.
That people recalling Goths in that period should beware of thinking that was a source and not an echo.
In 2006 Noel Fielding's Richmond Felicity Avenal was a basement dwelling leftover from many years past.