They are saying this to create a need for a solution. Naturally they will promote a public/private action to protect the election.
More federal oversight. More censorship. New election procedures swing states will leap at.
China helping Biden win? You mean they do not want Trump to raise the tariff on Chinese Goods? They will do anything to keep Trump out of the White House. I believe they might even resort to assassination, pandemic, war, to keep Biden in power.