The Korean tweet somehow renders it pitiful. Samsung invested hundreds of millions of dollars and 17 years into researching OLED, yet BOE reportedly only needed a few years to replicate. Lol. I hope BOE retaliates and succeeds in enacting a ban on Samsung TVs in the Chinese market.
Chinese TV brands already dominate the domestic market - Samsung TV's market share in China is only ~10%.
The issue is that premium Chinese TV manufacturers still make use of South Korean OLED panels, because the Koreans have an iron grip on the manufacturing of large OLED panels and are well protected by patents in global markets. You can't just copy their technology & expect to sell it every where.
The global patents system prevents near term competition outside of China (patents are setup to favor first movers). Presuming the goal is global dominance, the answer as always is to leap frog via new technology. If China wants to dominate in display panels then it has to invest early in next generation technology across the entire supply chain, like it did in EVs.