Not too sure they are. The "experts" insisted that Russia colluded with Trump to "hack the election", that they somehow faked or planted or were responsible for various laptop and email leaks, etc., all such things which have since been found to be false or at best no real evidence has ever been produced in support of.
Obiously Russian, Chinese, and all other governments engage in information campaigns, and obviously the US government knows a lot about what they are. But we the public does not necessarily have the same information. It's not really possible to distinguish the "well known and documented (by the military and espionage industrial complex)" operation of foreign countries from domestic propaganda developed by those corporations and agencies to influence their own citizens.
Obiously Russian, Chinese, and all other governments engage in information campaigns, and obviously the US government knows a lot about what they are. But we the public does not necessarily have the same information. It's not really possible to distinguish the "well known and documented (by the military and espionage industrial complex)" operation of foreign countries from domestic propaganda developed by those corporations and agencies to influence their own citizens.