Ah -- yes, I agree that it could have been CIA employees making a joke to each other.
I think it's equally possible, however, that:
1. Nobody in the CIA's computer-animation department spoke Russian;
2. Nobody in the CIA's Soviet department knew anything about video production;
3. The two departments could not take the trouble of writing a one-sentence memo to each other, and the badly-animated "УЫВЦФБГДД" television was the result.
(Similarly, Hilary's "Peregruzka" button was, I believe, a problem of non-communication between two different offices in the State Department -- and not an attempt to make fun of Russians.)