Exaggerations like his are typical for most news sites and especially common in the crypto world. Just yesterday I read that India is banning Bitcoin, while in fact there was no ban.
Coinnest ranks among the leading crypto trading platforms in South Korean, with Bithumb and Upbit topping the charts.
This so called top Bitcoin exchange in Korea isn't even in the top 6 crypto exchanges in that country.
http://www.bestbitcoinexchange.net/krw/I'm not even going to look for more and compare the volumes and popularity to place it somewhere on that list. Korea isn't that big, if they can't fit in top 3 - 5 exchanges in the country they literally don't count and have no influence on the world economy, the situation of BTC, and so on.