Previously this may have been true, mostly because South Korea and Japan have been embraced by the US as vassal states. Obviously China will not have the same level of cultural exchange with the US.
For example, do we complain about a lack of Cuban, Vietnamese, or Laotian soft power in the West? No, because those countries are also marked as enemies by the US.
Today, Chinese cultural exports are starting to be able to stand on their own in the global market without extra help from Western governments. For instance, Genshin Impact, made by miHOYO from China, earned the highest ever first-year launch revenue of any video game.
Her analysis is insanely narrow, and fails to take into account any of these historical issues. Her conclusion boils down to: "China should make the West happy so they buy more C-pop."