This man, this new President Elect in South Korea is China friendly politician and I am very doubtful that he does not try to copy many policies from China. We know that China under CCP are not a Bitcoin and cryptocurrency friendly nation, and if this President governs South Korea towards a same direction, this nation will become less friendly with Bitcoin and cryptocurrency.
Based on political history in this nation, I don't concern about him too much because his Presidency might not last too long. South Korean are strong in their political demand and if this President can not satisfy citizens, he will become a next President Outsted in the South Korea.
I don't know how close the new South Korean president is to China, but the two countries are completely different in many ways, from economic to political.
First: South Korea is a capitalist country, while China is a communist country. Second, they are one of the US's allies in the Asia region. Therefore, despite Lee Jae-myung's relationship with China, but once he became president of South Korea. They will be influenced and impacted by the United States more than any other country and I think Lee Jae-myung understands that better than anyone.
Even if they are friendly with each other, that doesn't mean they will imitate each other. Putin is also very close to Xi, but Russia does not ban cryptocurrencies like China.