Why do you stress and claim Turkish government facilitated oil sales, when the article you refer clearly suggests smuggling of oil? (Especially in Kurdish populated areas where they have close connections with Syria and Iraq)
Through indirect trade and smuggling, the ISIS oil enters the markets in Syria and in all other neighbouring countries. Is it fair to say single out Turkey and claim it is an operation of Turkish government as if Turkey governs Syria?
Also disappointing not to see any remark on Assad purchasing oil from ISIS via Russian businessmen/banks when they are the only actors so far punished for it. Perhaps you would like to update the article upon recent events.
It makes sense to criticise Turkey for being passive in fight against ISIS so far but claiming Turkish government is deliberately sponsoring and funding it via oil sales would be a gross exaggeration.