The funniest part here is that these kinds of articles sowing mistrust in the electoral process are doing far more damage than China could ever hope to achieve. Both liberal and conservative media continue to fuel the idea that elections are rigged and that the other side is cheating to win. US is now at a point where large portions of the public think that elections are unfair and if their party doesn't win that must be because the other side cheated or some foreign actor interfered in the elections.
Democracy is fundamentally a social contract that people choose to abide by. People have to believe that the system is fundamentally fair, and when their side loses then they have to accept that as a democratic choice. However, once the trust in the system is broken then there is no reason to respect election results. At that point people see the winner as an illegitimate tyrant that rules over them. The country ends up in a very volatile territory once the idea that the system is rigged starts to take hold.