What if there were? But what if it wasn't "each other" who was pulling the strings, but rather the "global elite"-/"new world order"-type... I've heard it said that the New World Order cannot [properly] operate w/ the existence of national superpowers. (And, interesting to note, without at least one other superpower any to focus on [or some goal/"reason to keep moving"] it becomes easy for a superpower to fall into decay/infighting/disrepair -- look at China, it's happened to them several times.)
Bezmenov actually mentions features of decomposing societies. Foreign involvement may boost it or not but it is all still features of natural demoralization.
This is likelier than not -- however, as you note, they really are not mutually exclusive situations.
>>>rather the “global elite”-/”new world order”-type...<<<
Oh, C’mon. What NWO? It hasn’t emerged before 1990s in any form capable to really challenge existing national power structures. Before the Cold War global communications were too poor to enable any viable organized conspiracy, during the Cold War all the global underground was dominated by either Soviet or US intelligence. There were Jewish international cooperation organization ‘Joint’ or whatever, and later UNO but claiming it as a part of NWO of that ‘bad’ type is to ask for extensive medical treatment. Thus, UNO is now in process of getting carjacked by corrupt 3rd world savages and can be potentially used by current or future NWO types. You may also mean bankers and arms makers who has influenced political decision making in ugly forms for quite a long but blaming them as part of some conspiracy is as dumb as blaming communists if your son is an addict, daughter is pregnant at 14 yo and both aren’t visiting church. You have to first look at the mirror and then think how different your parents were to find the problem. That is a main reason for demoralization. Act moral and make your kids this way.