The writer’s taken aback about good article providing puzzlement (6)
I believe the answer is:
enigma
'puzzlement' is the definition.
(I've seen this in another clue)
'the writer's taken aback about good article' is the wordplay.
'the writer's' becomes 'mine' (belonging to the person writing).
'taken aback' is a reversal indicator.
'about' means one lot of letters goes inside another.
'good' becomes 'g' (abbreviation).
'article' becomes 'a' (the indefinite article in English).
'mine' written backwards gives 'enim'.
'enim' placed around 'g' is 'enigm'.
'enigm'+'a'='ENIGMA'
'providing' is the link.
(Other definitions for enigma that I've seen before include "Mysterious person" , "Mysteriously puzzling person or thing" , "German military cipher machine" , "Gamine being a bit of a puzzle" , "'Puzzle, riddle (6)'" .)