The bulk update request #9857 is pending approval.

create alias 80's_themed (11) -> 80's_theme (734)
create alias 80's_vibe (5) -> 80's_theme (734)
create alias 1980s_(style) (2) -> 80's_theme (734)

Reason: All synonyms for 1980s themed art.
I've just noticed our decade theme tags aren't standardized :P but this is the current 80s tag