Maybe Finn Gillespie-Petersen did not write the sub-head. There's no mention of 'double-sided coin' in the body of the piece.
'two sides of the same coin' is a metaphor for two things that are a part of a single whole. 'a double-edged sword' is a metaphor for something that can be both favourable and unfavourable at the same time.
The metaphor in this sub-head seems to be a confused mixture of the twain.
In magic, a double-sided coin is simply a trick coin with both sides stamped the same, which clearly isn't relevant here as there's no assertion that tourism is some kind of magic trick.
westenglandbylines.co.uk/opini…
#EnglishLanguage #metaphors #Bylines #journalism #magic
Oxford’s dreaming spires or crowded squares: How residents really feel about tourism
Why tourism in Oxford is a double-sided coin and how it shapes the city's sense of placeFinn Gillespie-Petersen (West England Bylines)