I think that the Telegraph proof reader (if they use one) forgot to notice the word 'previously' had been omitted.
A missed letter or two can change the whole meaning of some written articles !
Zoe Bare All, I believe, meant the headline to read:
How the East Kent coast became the new Shoreditch
The rebirth of Dreamland shows why PREVIOUSLY shabby resorts such as Margate, Deal and Folkestone are now a magnet for fashionable buyers priced out of London
