Is he right or wrong?
He is not completely correct, but not blatantly wrong either.
Serum immunizations (i.e. Post-exposure vaccines) were formally allowed in 1958 and the Watchtower article openly admitted that blood-based vaccines had been placed in the same category as blood transfusions in the past.
"Ban" is too strong a word, as transfusion was not yet a "disfellowshipping" offense, but it would be dishonest to pretend that the JW parent organization did not explicitly teach against such "misuse of blood."
Our starry-eyed apologist could be shown multiple statements in the mid 50's stating that anything derived from blood is forbidden regardless of whether it was administered as an injection or transfusion.
The situation with organ transplantation is similar. To my knowledge, there were not formal sanctions for non-compliance, but again, it is dishonest to pretend that the JW's did not teach against them.
That transfusion was "essentially an organ transplant" and therefore a form of cannibalism was actually one of the JW arguments against transfusion at one point. Bartolomeo above has provided a quote, but there are others.