By saying the KGB organized the effort in 1965 and then saying under Andropov's orders doesn't connect him to being the head of the KGB. The writer never claimed that.
But I'd think that Andropov would be in the position of passing orders along since he was the head of the Department for Liaison with Socialist Countries (1957-1967).
Lets read again his article: "...
KGB chairman Yuri Andropov managed our anti-Vietnam War operation. He often bragged about having damaged the U.S. foreign-policy consensus, poisoned domestic debate in the U.S., and built a credibility gap between America and European public opinion through our disinformation operations. Vietnam was, he once told me, "our most significant success." The KGB organized a vitriolic conference in Stockholm to condemn America's aggression, on
March 8, 1965, as the first American troops arrived in south Vietnam.
On Andropov's orders, one of the KGB's paid agents, Romesh Chandra, the chairman of the KGB-financed World Peace Council, created the Stockholm Conference on Vietnam as a permanent international organization to aid or to conduct operations to help Americans dodge the draft or defect, to demoralize its army with anti-American propaganda, to conduct protests, demonstrations, and boycotts, and to sanction anyone connected with the war. .."
I undestand that Andropov being KGB head for 16 years did many bad things. One more accusation isn't change anything.
It is more about credability of author.
If he accuses someone of doing thing at least he may be more in line with facts. But he doesn't and already second time.