As if there were only a single “tribe” called “the Goth“ in the fourth century. It was a notable and distinct ethnicity (from the Greeks and Romans) that was historically relevant for nearly 1000 years.
"Gothic" comes to mean "Germanic, but in a poetic way"
"Gothic" comes to be applied to a certain strain of Medieval art and architecture, noted for its imposing asymmetry and in contrast to 'civilized' Romanesque art.
"Gothic" comes to mean "imposing and barbaric", and increasingly applied to 18th and 19th century styles which intentionally invoke older aesthetics and, increasingly, horror literature.
"Gothic Rock" is named for this 19th century association in the 1970s, and "Goths" come from there.
They both look pretty awesome to me.